Trimethoprim is a herbicide that can effectively control wheat and barley, grass, Japanese amaranth, aunt, hard grass, bluegrass, head grass, wild oats, ryegrass, etc. Undergraduate weeds. The drug is an inhibitor of acetyl-CoA carboxylase activity. Drugs are absorbed through the stems and leaves of weeds and can be transported to meristems to inhibit fatty acid biosynthesis and disrupt cell division. The victim weeds lose their green color, discolor afterwards and die, and generally die in 3 to 4 weeks after application. 40% Methotrexate water dispersible granules of Jiangsu Agrochemical Horticultural Engineering Technology Research Center Co., Ltd. (telephone) are registered for spraying stems and leaves in small wheat fields to control annual weeds. The recommended dosage per hectare is 390-480. Grams, equivalent to 65 to 80 grams per mu. According to the technical personnel of the Jiangsu Provincial Agricultural Horticultural Engineering Technology Research Center Co., Ltd., the phenoxycarboxylic acid herbicides such as metyrolone and oxazolyl oxadiazepine have no cross-resistance and can prevent the resistance of these drugs. Grass, Japanese Acacia and other grass weeds. It is recommended to apply wheat at the seedling stage before winter wheat. Generally, we use 40% trimethine water dispersible granules in the 2 to 4 leaf stage of weeds and 80 to 120 grams of granules. When the spring grass age is large, the amount of mu should be appropriately increased to 240 grams. . The drug's half-life in soil is 6.5 days, which is safe for post-planting crops; it is also very safe for wheat, and even if it is applied twice, it will not cause phytotoxicity to wheat. Ma Guangshan, Anhui Province, plant protection and phytosanitary station Xu Guanghao and others reported: on November 28, 2006, respectively, 40% methacrocorin per mu water dispersible granules 25 grams, 50 grams, 75 grams, 100 grams, add water, 40 kilograms of stems Leaf spray control to see aunt Mai, Japan to see aunt, grass and other grass weeds, spray water as a control. On the third night after application, there was rain at night and it turned cloudy. Test results: 30 days after the drug, the 40% methadenone water dispersible granules in each treatment area yellowed the grass weeds and began to die. The overall control effect was 66.74% to 76.42%. After 45 days of field investigation, 40% methatritone water dispersible granules were commonly killed in the grass weeds in various treatment areas, and the control effect was obvious. The growth of undead weeds was significantly weaker than that of the clear water control areas, indicating that the drug had Better persistence, the total strain control efficacy against grass weeds was 71.01% to 84.97%, and the fresh weight control effect was 84.56% to 94.24%. In general, the control effect on Aunt Mai is slightly better than the control effect on Japanese Acacia and Grass. After 5 days, 15 days, 30 days, 45 days, and after spring, the growth and development of wheat were observed visually. The wheat production, jointing, and heading in the treated area were normal and had no adverse effects on the surrounding environment. The test results showed that 40% methathorone water dispersible granules had better control effect on grassy weeds in winter wheat fields, which could inhibit their growth and was safe to wheat. A single application can basically control the damage of weeds in wheat field. From the control effect point of view, the application period is suitable for the grass leaf weeds 2 to 4 leaf stage; from the point of view of safety and economic benefits, the use of the drug 50 ~ 75 g per mu water 30 ~ 40 kg stem leaf spray treatment is better . Lab Nitrile Gloves,Disposable Gloves,510K Disposable Gloves,Astm D6319 Examination Gloves Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshimedical.com