In order to give full play to the effect of anti-rust and production of fungicides , the northern winter wheat area should pay attention to the two key periods of pre-winter and early spring seedling prevention and prevention and early-stage prevention and control, with high-sensitivity varieties, early planting wheat fields or late sowing. The wheat field with high yield level is the key control object, and the method of drug detection is adopted to find one point and control one piece. At present, the main agent for large-area application is triadimefon, 15% or 25% wettable powder, 20% emulsifiable concentrate, 20% suspending agent, 4~12 g of the original drug, and the drug is determined according to the different susceptibility of wheat varieties. Quantity, add water 50~75 liters. Spraying once during the jointing stage or when the diseased rate from booting to heading is 5%~10%; if the condition is heavy, the duration is long, and it can be administered again after 15 days. In addition, 12.5% ​​diniconazole wettable powder, 15% triazole alcohol wettable powder, 2 to 6 grams of the original drug; 20% propiconazole EC, 25% Kehui EC, 25% nitrile cream, 5 % oxazolol microemulsion and 20% phytoprotective emulsifiable concentrate, 8~15 ml of the original drug, the spray anti-disease effect is good, can be selected according to the source of the drug. Precision Bearing Ring Lathe Machine Bearing Ring Lathe Machine,Precision Bearing Ring Lathe Machine,Outer Ring Bearing Ring Machine,Angular Contact Bearing Lathe Shaoxing Sunfong Intelligent Equipment Inc. , https://www.zjsxsunfong.com