"Other herbicides" currently have 49 products. In 2014, the global sales of this category were US$2.759 billion, accounting for 10.4% of the US$26.440 billion of global herbicide sales. Among them, there are 6 products: pinoxaden, clomazone, dicamba, fentrazone, quinoxalic acid and bromoxynil. The total sales in 2014 were US$1.62 billion, accounting for the largest share of the “other herbicides” market. 58.6%.

Pinoxaden is the number one in sales among "other herbicides", with a compound annual growth rate of 16.0% from 2009 to 2014; it is not only a market-leading product, but also a high growth rate. Star product. In 2018, the global sales of pinoxaden was US$435 million, and it is expected to become a member of the US$500 million herbicide in the future.

Characteristics of pinoxaden

(1) Pinoxaden and aryloxyphenoxypropionate (Fop) and cyclohexenone (Dim) and other herbicides belong to ACCase inhibitors, but because the pinoxaden has a new chemical structure, its The site of action is different.

In recent years, the resistance of grassy weeds in wheat fields to aryloxyphenoxypropionate herbicides with a single site of action such as fenoxaprop-p-ethyl has increased, making it difficult to control parts such as hard grasses and Japanese plants. Weeds such as wheat nipples and calamus; and pinoxaden has new action sites, and there is no cross-resistance to these agents, and it has shown to Very good medicinal properties. This characteristic has increased the huge space for market development of pinoxaden in the management of resistant weeds.

(2) Pinoxaden is a selective, systemic and conductive grass weed herbicide, which has the characteristics of high efficiency, broad spectrum and quick effect. The pinoxaden can be absorbed by the leaves of weeds after administration, and then transferred to the meristem, inhibiting the synthesis of esters in the dividing cells, and the weeds quickly stop growing, leading to the necrosis of the weeds.

Pinoxaden is used to prevent and control annual gramineous weeds in wheat and barley fields, such as Mai Niang, Japanese Mai Niang, wild oats, ryegrass, setaria, sclerophyll, and scorpion grass after germination; generally 1-3 after application Weeks, symptoms of phytotoxicity appeared and necrosis was rapid. It is also reported that pinoxaden is the best agent for controlling Phalaris arundinacea. The results of a demonstration test carried out by the National Agricultural Technology Extension Center show that in the 3- to 4-leaf stage of Phalaris arundinacea, 5% pinoxaden EC is used per acre for 70～ 80 mL, the control effect is above 90%. In addition, pinoxaden has an excellent control effect on stubborn grass weeds such as ryegrass.

(3) Pinoxaden is a herbicide for stems and leaves, which is rarely absorbed by plant roots, has little soil activity, and degrades quickly in the soil. It is safe to crop wheat, barley and non-target organisms, and has good safety characteristics to crops and the environment after planting. Symptoms of weed poisoning occurred 1 to 3 weeks after application, and the meristems died rapidly. It is mainly used to prevent and control gramineous weeds in spring wheat, winter wheat, durum wheat, barley and other grain crop fields, such as foxtail, setaria, barnyardgrass, etc.

Compared with wheat, barley is more sensitive to many herbicides. Therefore, there are very few species of gramineous weed herbicides registered in barley fields, and currently there are only two active ingredients, one of which is pinoxaden and the other is fenoxaprop-p-ethyl.

Over the years, Syngenta has conducted a large number of tests at home and abroad, showing that the safety of pinoxaden to wheat and barley is very good at the recommended dose and multiples of the recommended dose, especially when the safener is added to the herbicide. The ester of pinoxaden can further improve the safety of the product.

(4) The pinoxaden has good compatibility with other herbicides, and can be compounded or mixed with most broadleaf weeds in wheat fields. Such as mixing with 50 g/L bisflufentrazone suspension (Premax), 58 g/L bisflufentrazone·azopyramide suspension (maxi), tribenuron-methyl and other barrels to achieve The purpose of one-time medication to control all weeds in wheat fields. And the application period is relatively wide. It can be applied from the 2 leaf and 1 heart stage of wheat seedlings to the booting stage. The best application period is the 3 to 5 leaf stage after emergence of most gramineous weeds in the field.

(5) Pinoxaden has excellent control activity against weeds that are resistant to ACCase inhibitors, especially against some vicious gramineous weeds such as A. dilatatum, A. dilatifolia, wild oats, ryegrass, hard grass and The control effect of chrysanthemum is close to 100%.

For example, in the United Kingdom, pinoxaden can effectively control wild oats that are resistant to clodinafop; in Chile, ryegrass has lost control in some areas due to resistance to clodinafop, and the use of pinoxaden has solved the problem. these questions. Indoor tests show that pinoxaden-resistant ryegrass (which has developed resistance to sulfonylurea and aryloxyphenoxypropionate herbicides) shows excellent control effects. In Jiangsu, Anhui and other provinces, many grassy weeds have developed resistance to clodinafop and oxadifen, and the use of pinoxaden still shows good resistance to these resistant weeds. Prevention effect. This feature adds a bargaining chip for the development of pinoxaden in the field of resistance management, and makes pinoxaden now a powerful weapon against resistant weeds in wheat fields around the world.

(6) Pinoxaden can effectively control ryegrass, and the control effect is stable. Multi-flowered ryegrass is an annual gramineous forage, native to Europe. It likes temperature and humidity, is resistant to low temperature, salt and alkali, and has strong regeneration and reproduction ability. It is used to feed grass-eating livestock and poultry such as cattle, sheep, pigs, rabbits, and geese. High-quality grass species are introduced and planted in many parts of our country. In the pasture planting area, affected by man-made or soil erosion, ryegrass gradually transferred to the wheat field and caused harm.

Although clodinafop-propargyl has been used to control ryegrass well for many years, due to its long-term use, resistance has developed rapidly in recent years, so that clodinafop-propargyl has become less effective in controlling ryegrass; while using A Although the medicaments such as disulfuron-methyl, flufentrazone and fluazuron-methyl have certain control effects on ryegrass, they are not as effective as the use of pinoxaden. At present, 5% pinoxaden EC (Axiu® 0.3) and 5% pinoxaline EC (Daneng•0.3) used in the prevention and control of ryegrass can effectively control multi-flowering in wheat fields. Ryegrass. Generally, it has the best control effect in the 2~4 leaf stage of weeds before winter, and the dosage can be increased when the grass is older in spring. This medicine is worthy of attention.

(7) The pinoxaden is not only used in the "cereal" (wheat and barley field) market globally, but also prevents annuals (such as wild oats, ryegrass, setaria, hard grass, chrysanthemum grass, Kan Mai Niang, Japanese Kan Mai Niang, Cobra, etc.) Gramineous weeds. In 2014, the sales of pinoxaden on cereals reached US$250 million, accounting for 60% of its total sales.

Another application field of pinoxaden is in the "non-crops" (lawn and gardening) market, especially in Europe and North America; sales in this field reached 170 million US dollars in 2014, accounting for its total sales 40% of it. At present, pinoxaden has not been put on the market as "non-agricultural crops" in other countries and regions. This is also an important growth point for pinoxaden in the future.

(8) Since the market of pinoxaden, the market has been growing, and it is also the youngest product in the patent protection period, and there is still huge room for market growth.

Syngenta first discovered the good biological activity of pinoxaden in 1997. Commercial development was carried out in 2000, and registration applications were filed in 2004. In 2005, it was approved for the first registration in the UK under the trade name Axial0. 3 (Palfenapyr + chlorfenapyr). In the same year, 98% of the technical product of pinoxaden and Axial 0.3 (oxafen-pyrazone + chlorfenapyr) were registered in the United States for use in barley, spring wheat and winter wheat fields to control annual ryegrass and canary grass. , Setaria, barnyardgrass, ryegrass, white oats, Persian poison wheat, wild oats and wild millet and other weeds.

In 2006, Syngenta registered and marketed pinoxaden in Canada, the United States, Australia, New Zealand and other countries for the control of gramineous weeds in post-emergent wheat and barley fields; subsequently, it was listed in Australia, Germany, and India. , Used to control weeds in wheat fields. Pinoxaden is very suitable for the control of weeds in spring cereals. It has a wide weeding spectrum and can effectively control many grassy weeds such as wild oats and rye. In order to improve the safety of the product, it is necessary to add the safener hydrochloride.

In 2008, the combination product of pinoxaden and clodinafop (clodinafop) and the safener, Traxos.03, was launched in France and Italy; in 2009, the combination of pinoxaden and clodinafop (florasulam) was launched in France and Italy. The compound products are also on the market in the United States and Canada.

In 2012, Axial Star.03, a composite product of pinoxaden and fluroxypyr, was registered and marketed in the United States for the control of annual gramineous weeds and broadleaf weeds on cereal crops. Axial Xtreme 0.3 (a composite product of pinoxaden + fluroxypyr) is registered and marketed in Canada for spring wheat and barley. The product has also been registered for use in Europe. In 2015, the composite product Traxos Two.03 of pinoxaden with clodinafop-propargyl, 2,4-D-butyl, and fluroxypyr was launched in Canada to prevent and control annual gramineous weeds in spring wheat and durum wheat fields. And broadleaf weeds. Pinoxaden has also been registered in the European Union and is valid until the end of 2026.

In addition, pinoxaden is also listed in South America, Africa, the Middle East, South Asia and other countries. At present, its market has spread to more than 50 countries and regions, covering all the global grain markets. Among the most important markets are weeding of cereal fields in Europe (such as France, Germany, Italy, Austria, Hungary, Bulgaria, Czech Republic, the Netherlands, Belgium, Russia, Belarus, Portugal, Romania, etc.) and North America (the United States, Canada, and Mexico). In the pharmaceutical market, the annual sales are more than 100 million US dollars. This also laid the foundation for the rapid growth of pinoxaden, making it one of the top 10 herbicides in global sales.

Pinoxaden is mainly used in cereals (mainly wheat and barley) and non-crops (lawn and gardening) in the world. According to 2014 sales, cereal sales reached US$250 million, accounting for 60% of the total. ; Non-crop category accounts for 40%, but Syngenta’s main domestic market for pinoxaden is cereals. In the future, domestic non-crop category using pinoxaden is also a new growth point.

Since pinoxaden was listed in 2006, the market has performed well. One year later (2007), global sales exceeded 100 million U.S. dollars (110 million U.S. dollars). In the following years, its global sales grew very rapidly. In 2009, 2010, 2011, 2012, 2013 and 2014, the sales were US$202 million, US$230 million, US$300 million, US$360 million, and US$400. Billion U.S. dollars and 425 million U.S. dollars. In 2015, due to weather conditions (the sales of all pesticide products declined), the sales of pinoxaden also dropped slightly to US$400 million, and the compound annual growth rate of pinoxaden from 2010 to 2015 reached 11.7. %. In 2016, the global sales of pinoxaden soared to a record high of US$469 million. From this, it can be seen that pinoxaden can be described as a herbicide that has been growing all the way. Such a situation is really rare in pesticide products. Global sales of pinoxaden fell slightly in 2018 to 435 million U.S. dollars (still accounting for the 9th place in herbicide sales).

The global consumption of pinoxaden in 2016 was about 917 t (100%), and the consumption in the past 3 years has increased by 5.30%. In 2016, the main global application crops of pinoxaden were cereals, accounting for 75%, and the rest were other types of crops (turfgrass and horticulture). In 2016, the most used amount of pinoxaden (discounted in hundred) was: Canada (250 t), the United States (170 t), India (72 t), France (69 t), Turkey (51 t), Russia (27 t) ), Pakistan (24 t), Germany (20 t).

Pinoxaden was also ranked 5th among Syngenta's top ten best-selling products in 2015 (the top 4 were azoxystrobin, thiamethoxam, mesotrione and metolachlor); and Pinoxaden is still the exclusive product listed and sold by Syngenta, and it is also the only product in the company's top ten products that is still in the compound patent protection period. However, the European patent and Chinese patent of pinoxaden expired on March 10, 2019, and the U.S. patent also expired on March 11, 2019. This will usher in the new growth of the pinoxaden market, and there is a lot of room for market growth. In the next few years, its global sales are expected to reach 500 million US dollars.

The variety of pinoxaden has attracted much attention in the country. In the first half of 2017, domestic enterprises applied for field trial approval products for the active ingredient of pinoxaden. There were about 70 products, especially the emulsifiable concentrates, which had more than 50 products. It is a dispersible oil suspending agent and suspending agent. At present, the patent period of pinoxaden has passed, and the registration climax of the technical and dosage form products of pinoxaden is bound to usher in China.

At the same time, it should be noted that the protection period of some composite products of pinoxaden has been extended due to SPC protection. For example, the protection period of composite products of pinoxaden + clodinafop + chlorfenapyr is extended to 2025. April 19, 2015; the protection period of the composite product of pinoxaden + clodinafop + fenoxsulam until September 5, 2025; the composite product of pinoxaden + fenoxsulam + fentrazone The protection period is until September 4, 2025; the protection period of the composite product of pinoxaden + clodinafop-propargyl is until January 24, 2021; the protection period of the composite product of pinoxaden + sulfentrazone is until December 2024 On the 17th.

(1) Xiao Wenxiang et al. evaluated the effect of 50 g/L pinoxaden EC on controlling Phalaris arundinacea in winter barley fields. At the best time and at a dosage of 900-2 400 mL/hm24, the plots were tested for the control of Phalaris arundinacea in barley fields. The results showed that the best application time was Phalaris arundinacea at the 3 to 4 leaf stage and barley at the 4 to 5 leaf stage. At this time, the effect of the application was the best, and the control effect of the 4 dosages reached more than 97%. 50 g/L pinoxaden EC agent has a very good effect on the control of wheat field Phalaenopsis, which is significantly better than the control agent 69 g/L fenoxaprop-ethyl EW (and artificial weeding. 50 g/L pinoxazone Ester EC is used for the control of Phalaris arundinacea in winter barley. No adverse effects on arthropods in the field have been observed. It is safe for barley and has no phytotoxicity.

(2) 5% pinoxaden EC is currently an excellent stem and leaf herbicide for controlling gramineous weeds in barley fields. Zhou Jiachun et al. used 5% pinoxaden EC agent 1 200 g/hm2 before the winter and 30 days after application, its control effect on grass weeds reached 72.99%; 120 days after the application, it had the control effect on grass weeds. The control effect can reach 91.92%, and the fresh weight control effect can reach 94.89%, which is significantly higher than the 1 875 g/hm2 plant control effect and fresh weight control effect of the 50% isoproturon preparation in the same period. 30 days after the application of 5% pinoxaden EC with 1 500 g/hm2 in spring, its control effect on grass weeds reached 82.18%; 60 days after the application, its control effect on grass weeds was good. Up to 96.26%, the fresh weight control effect can reach 97.61%, which is also significantly higher than the 3 750 g/hm2 plant control effect and fresh weight control effect of the 50% isoproturon preparation in the same period.

(3) Guo Liangzhi et al. clarified the efficacy of 50 g/L pinoxaden EC in the control of wild oats in spring wheat in Qinghai Province, the appropriate dosage and the safety of crops. The research uses 50 g/L pinoxaden EC to control the application technology and effect test of barley field oats. The test results show that the dosage of 50 g/L pinoxaden EC is 1 200 mL/hm2 in the range of 225～675 mL/hm2 mixed with water, and the effect is very good in the control of highland barley field oats, and it is applied in the first stage of highland barley 4 leaves. Optimally, the soil entropy is good for the use of medicament. Application of pesticides at the 3~5 leaf stage of highland barley in different ecological areas of Qinghai Province, 50 g/L pinoxaden EC 1 200 mL/hm2 single treatment and 10% tribensulfuron WP150 mL/hm2 mixed treatment area to control wild oats Both reached more than 95%. The leaf color of the barley in the single treatment area was normal, and the leaves in the mixed treatment area with 10% tribenuron-methyl WP150 mL/hm2 had a slight greenish yellow spot in the early stage, and the macula disappeared after 20 days. The effect was significant. It is safe for highland barley. The control area increased by more than 12%.

(4) Sha Guilan et al. used 5% pinoxaden EC to control weeds in winter barley fields during 2012-2013. The main weeds in the field were wheat nipples, hard grasses, and sagegrass. The demonstration test is divided into winter use and spring use. Winter is used on December 23, 2012. At this time, the weeds are at the 3~5 leaf stage, and the stems and leaves are sprayed; spring is used on February 22, 2013 before barley is green. Spray treatment.

The test results showed that after 25 days of application in winter, the weeds appeared poisoning symptoms, and 40 days after the application, the weeds began to die. The control effect was investigated 80 days after the medicine, and as the dosage of the medicine increased, the medicine effect improved. 5% pinoxaden EC 900, 1 200, 1 500, 1 800 mL/hm2, plant control effects were 87.7%, 92.5%, 100.0%, and fresh weight control effects were 89.1%, 94.6%, 100.0%, respectively. The control effect and fresh weight control effect of the control agent 50% isoproturon wettable powder were 69.8% and 71.5%, respectively.

After 15 days of application in spring, the weeds showed symptoms of poisoning. 25 days after the application, the control effect was investigated. 5% pinoxaden EC 900, 1 200, 1 500, and 1 800 mL/hm2, the plant control effect was 89.4%, 94.7%, 99.8, respectively % And 99.9%, and the fresh weight control effects were 87.3%, 91.7%, 94.0% and 97.4%, respectively. The test results also show that 5% pinoxaden EC encounters continuous low temperature weather after winter application, and the death time of weeds is delayed, but it does not affect the control effect. When used in spring when the stability is high, it can significantly improve the control effect and the speed of weeding. Under the experimental conditions, 5% pinoxaden EC is relatively safe for barley.

(1) Qiangsong et al. used 50g/L clodinafop-chlorfenapyr and pinoxaden EC to evaluate the efficacy of weed control in Qitai County, Xinjiang. For gramineous weeds in wheat fields at the 2 to 5 leaf stage and broad-leaved weeds at 2 to 4 leaf stage, use 50g/L clodinafop-chlorfenapyr and pinoxaden EC 30～60 g/hm2 and spray with 450L of water. After 30 days, the control effect against wheat field vicious weed wild oat plant is over 98.68%, the fresh weight control effect can reach over 94.58%, and the control effect against setaria is over 88.68%. Through the observation of the effect on the field broadleaf weeds, 50g/L clodinafop-chlorfenapyr EC has an obvious growth effect on the broadleaf weed Chenopodium album and Polygonum vulgare, and has weak competitiveness on the growth of wheat; Low-dose to high-dose treatments have 41.19%～69.41% control effects on Chenopodium cinerea. Although the medicament has a certain inhibitory effect on Polygonum vulgaris, the plant control effect is not significant. The test results show that 50g/L clodinafop-chlorfenapyr-pyroxazone EC is an excellent herbicide for wheat field control. It is highly effective on weeds in wheat field and is safe for wheat.

(2) Duan Meisheng and others have used Syngenta's 50 g/L clodinafop-chlorfenapyr EC product for two consecutive years to conduct field trials for the control of winter wheat in spring. The test results show that the suitable dosage of 45-60 g/hm2 has obvious inhibitory effect on hard grass and calamus. The growth of weeds basically stops 7 days after the application. The leaves turn purple. After 15 days, the weeds completely stopped growing, which was significantly different from the blank control plant, but did not die. After 30 days, most of the weeds treated with each dose died, and the control effect was significant.

In 2007, each dose treatment of 50 g/L clodinafop-chlorfenapyr and pinoxaden EC had 85.0%-92.1% control effects on weeds; in 2008, each dose treatment of 50 g/L clodinafop-chloridin and pinoxaden EC was treated with various doses. The control effect against weeds is 82.9%-98.0%. After 45 days of treatment, the weeds treated with each dose have a good control effect. In 2007, the control effect of each dose of 50 g/L clodinafop-chlorfenapyr and pinoxaden EC on weeds was 93.0%～99.5%, fresh weight The control effect is 9.0%～99.5%; the control effect of each dose of 50g/L clodinafop-chlorfenapyr EC in 2008 is 86.1%～99.4%, and the fresh weight control effect is 86.0%～99.8% . Comprehensive 2-year test results show that the main weeds in wheat fields, hard grass and pottery grass, treated with each dose of 50 g/L clodinafop-chlorfenapyr EC, have a good control effect on scoter grass plants at the same dose. The control effect of Hexianzhong is better than that of hard grass. The fresh weight control effect of 50g/L clodinafop-butyl EC 45, 60, 75 and 90 g/hm2 after two-year investigation was significantly higher than that of the control agent 150g/L clodinafop WP45 g/hm2, 50g/L oxadifen Ester EC 45 g/hm2 and 69g/L Fenoxaprop-ethyl EW82.8 g/hm2. According to post-dose observations, the growth and appearance of wheat in each dose treatment area of 50g/L clodinafop-chlorfenapyr and pinoxaden EC were normal, and there were no symptoms of phytotoxicity. There was no abnormal growth of wheat under high-dose treatment, indicating that it is safe for the test agent. . The results of yield measurement at harvest showed that compared with the blank control, the yield increased to varying degrees.

(3) The 15% pinoxaden·flufenox isooctyl dispersible oil suspension developed by Gao Jingyu and others was conducted in a field test in Kunming, Yunnan in 2016. The test crop was wheat and the test target was Gramineous weeds and broadleaf weeds.

(4) In order to screen out safe and efficient herbicides for post-emergence treatment of wheat stems and leaves, researchers from Jiangdu District Agricultural Science Research Institute, Yangzhou City, Jiangsu Province, and agricultural technicians from Fairy Town Agricultural Technology Station, Jiangdu District, Yangzhou City, Jiangsu Province, in January 2011 From 2 to April 2 in Tongxing Village, Daqiao Town, Jiangdu District, Yangzhou City, a large energy 50 g/L pinoxaden·propinyl oxalic acid EC 750 mL/hm2 + 50% isoproturon wettable powder 1500 g/hm2 was carried out in Tongxing Village, Daqiao Town, Jiangdu District, Yangzhou City. Daneng 50 g/L pinoxaden·Clownoxalic acid EC 750 mL/hm2＋50% isoproturon wettable powder 1 875 g/hm2, Daneng 50 g/L pinoxaden·Clownoxalic acid EC 750 mL/hm2＋50% Isoproturon wettable powder 2 250 g/hm2, 6.9% Puma water emulsion 1 200 mL/hm2 was sprayed in wheat fields, and the safety of the above treatments on wheat and the safety of the above treatments were studied. The control effect of grass weeds and small-grain broad-leaved weeds such as pomacea, shepherd's purse, pig stalk and so on.

The test results show that: Daneng 50 g/L pinoxalic acid EC 750 mL/hm2, adding 50% isoproturon wettable powder 1,500-2 250 g/hm2, is safe for the test wheat, and is safe for the wheat The undergraduate hard grass has a good control effect, and it has a good control effect on cow chickweed and shepherd's purse, but it has no effect on pig stalk and big broccoli. Comprehensive control results, it is recommended to use Daneng 50 g/L pinoxaden·propinoxalic acid EC 750 mL/hm2 + 50% isoproturon wettable powder 1 875 g/hm2 for water 750 mL/hm2 in 3～4 leaves of wheat seedlings. After the season and gramineous weeds are basically uniform, spray evenly, which can effectively control gramineous weeds in wheat fields and small-grain broad-leaved weeds such as cow chickweed and shepherd's purse.

The mixing of different pesticide varieties is a common method to prevent and control agricultural diseases, pests and weeds. Screening of pesticide formulations and screening out reasonable formulations can effectively improve the actual control effect, reduce the amount of pesticides used, reduce costs, and delay the emergence of resistance to diseases, pests and weeds. It is an important means of comprehensive agricultural management.

(1) Zhang Yangyang et al. carried out the best mixture ratio of flufentrazone, pinoxaden and isoproturon, field effects on annual weeds in wheat fields, and safety tests on wheat. The test results show that the best ratio of flufentrazone, pinoxaden and isoproturon is 1:5:100 (mass ratio). When the effective ingredient dose is 400 g/hm2, it can be used for grass weeds. The indoor fresh weight quality inhibition rates of Stellaria, calamus, and broad-leaved weeds, Chrysanthemum vulgaris, S. chinensis, and Sorrel were 100.00%, 99.74%, 100.00%, 90.57%, and 95.49%, respectively, and had no effect on the growth of wheat seedlings. Influence. Field test results showed that: 40 days after spraying, at a dose of 600 g/hm2 of active ingredients, the plant control effect and fresh weight quality control effect of annual weeds in wheat fields were both greater than 90%, and visual observation had no effect on the growth of wheat seedlings. Influence.

(2) Gaokuan, etc., invented a herbicide composition providing oxazimone and pinoxaden with a mass ratio of 1-20:20-1. The synergistic effect on the prevention and control of gramineous weeds in rice fields is very significant. While expanding the weeding spectrum, it can also reduce the use of pesticides, reduce the amount of pesticide residues on crops, and reduce environmental pollution. The earth delays the development of weed resistance.

(3) The objective of Wu Zewei and others' inventions is to provide a herbicidal composition containing carfentrazone and pinoxaden that is highly effective, low-toxic and has a long lasting period, and can effectively control annual weeds in wheat fields. In a mass ratio of 1-10:10-1, the mass percentage of the total mass of carfentrazone and pinoxaden in the composition is 2% to 80%; further, the preferred weight of carfentrazone and pinoxaden The ratio is 1:5 to 5:1, and the total weight of carfentrazone and pinoxaden is preferably 5% to 70% by weight in the composition; the rest are permitted and acceptable auxiliary components in pesticides.

According to actual needs, the composition can be prepared into a suspension, a dispersible oil suspension, a water emulsion, a microemulsion, a wettable powder, and a water dispersible granule to control annual weeds in wheat fields. The herbicide composition has a synergistic effect, reduces the amount of pesticides used, reduces the adverse effects of pesticides on the environment, expands the herbicidal spectrum, and is beneficial to the comprehensive management of weeds in wheat fields.

(4) Shi Xiaolei et al. disclosed a herbicidal composition of pinoxaden, which includes active ingredients mesosulfuron-methyl, pinoxaden and clodinafop. Wherein the weight percentage of mesosulfuron in the composition is 1%-10%, the weight percentage of pinoxaden in the composition is 2%-10%, and clodinafop-ethyl occupies the weight of the composition The percentage is 2% to 30%. The composition of the present invention can be configured into suspending agents, dispersible oil suspending agents, wettable powders, and water dispersible granules that are allowed to be used in agriculture; the composition of the present invention is reasonably selected, has a significant synergistic effect, and expands the herbicidal effect. It reduces the cost of medication, has good safety on wheat, and improves the control effect on wheat; it is especially suitable for the control of wheat field grass weeds such as Japanese scorpion, pottery grass, hard grass, bluegrass or japonicum japonicus.

Pinoxaden is a new phenylpyrazoline herbicide with a novel structure and unique mechanism of action (also an acetyl-coenzyme A carboxylase (ACCase) inhibitor herbicide). Since the market of pinoxaden until 2016, it can be described as a herbicide that has been growing all the way. Its market has spread to more than 50 countries and regions, covering all the grain markets in the world, the most important of which are in Europe and North America. , South America, Asia-Pacific and other cereal field herbicide markets. This also laid the foundation for the rapid growth of pinoxaden, making it one of the top 10 herbicides in the world.

In recent years, the dominant populations of gramineous weeds in wheat fields have changed greatly, especially the herbicides of ACCase inhibitors such as aryloxyphenoxypropionates and cyclohexenones because of their single action sites and weed resistance. Strengthened, resistant weeds develop rapidly, leading to an upward trend of gramineous weeds, and the domestic market urgently needs new herbicide varieties for the prevention and control of gramineous weeds in wheat fields. Pinoxaden is not only a selective, systemic and conductive herbicide for gramineous weeds, but also has the characteristics of high efficiency, broad-spectrum, and quick effect. The herbicide is also an ACCase inhibitor, but has a new site of action. There is no cross-resistance to these drugs. This feature brings great opportunities for the development of pinoxaden in the management of resistant weeds.

No matter at home or abroad, the formulation products of pinoxaden are mainly single-dose and compound products of emulsifiable concentrate, and there are still some compound products of dispersible oil suspension concentrate. The dispersible oil suspension concentrate product is the main development direction for the processing and application of pinoxaden. It not only expands the control spectrum, but also avoids the use of any organic solvents in its processing, and no dust is generated. It has higher spreadability and adhesion, so that the product can exert higher efficacy.

As domestic companies have successively registered the technical products of pinoxaden and developed corresponding emulsifiable concentrates and dispersible oil suspension concentrates, Syngenta has promoted and sold pinoxaden products in the country for many years, and its market Relatively mature and recognized by users, pinoxaden will surely develop in China.