The plant protection work for winter crops is mainly to do a good job in seed treatment of large wheat before sowing, control of weeds in wheat and rape fields, and prevention and control of locust in rape seedlings. The main purpose of the treatment of large wheat seeds is to control various diseases of seed-transmitted wheat, such as various smut and barley moire. The method is to seed each 50 kilograms of seeds with 20% of rice feet 100 grams and seal them with a nylon bag for 24 hours before sowing. Large-scale wheat and rapeseed field Chemical weeding No-tillage Wheat fields and rape fields are required to be sprayed with 10% glyphosate 500 ml or 40% Chun Duo Duo 150 ml plus water 40 kg before sowing or transplanting, and sowed after 3-5 days after application. Or transplanting. Per acre size wheat field with 50% hypertonic isopropanol wettable powder 125 grams in the wheat field weeds one leaf to one heart and two leaves add water 50 kg spray to prevent weeds. In wheat fields, weeds can also be sprayed with 6.9% fine mash emulsion or 6.9% glutinous horse milk emulsion 50-60 ml water plus 50 kilograms of weeds at the time of two to four-leaf weeds. For transplanting rapeseed field, it is recommended to use 35% of a 60g wettable powder and add 50kg of water to the spray one day before transplanting to prevent weeds. Mu can also be sprayed and weeded with 90% Cinnaise emulsion, 45 ml per mu, 50 kg water. According to the test, the use of 35% mu for a 60g wettable powder, as long as the amount of water sprayed, spray evenly, can basically do a solution to solve the whole season weeds, eliminating the need for spring and then fast knife and other stem and leaf treatment agent weeding trouble. Rape virus disease prevention rapeseed virus disease is a disease transmitted by aphids. Therefore, to prevent the occurrence of rape virus disease, the key is to do a good job of rapeseed locust prevention and control work. After the emergence of rapeseed, if any locust is found to be harmed, 10% imidacloprid wettable powder should be used immediately to spray 40 kg/20 gram of water per mu. Seedlings should be used continuously for 2-3 times. Precautions When using hypertonic isoproturon, attention should be paid to the influence of the cold wave. Apply the pesticide to the cold tail warmer to avoid phytotoxicity. Spermophilus and Hummer can only be used to control monocotyledonous weeds in wheat fields and must not be used in barley fields. In order to ensure the safety of post-cultivation crops, herbicides with long-lasting effects, such as forsythroxil and benzalkonium, should be avoided in wheat fields.
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