What diseases and insect pests should be prevented in wheat planting in April?

What diseases and insect pests should be prevented in wheat planting in April? Please point to wheat planting in April to prevent the following diseases and insect pests: wheat total erosion: 100 grams of 20% vermicellin EC per mu, or 150 grams of 15% strychnine wettable powder per mu, and 50-70 kg of water. Spray wheat roots along the ridge with a sprayer that twists off the water sheet, the effect is very obvious, and wheat sheath blight can be treated at the same time. Wheat root rot: at the initial stage of the disease, spray 12.5% trimethoprim 20g 30g or 20% strychnine 40g 50g and water 50kg at the base of the wheat stem, once every 15 days. You can also use 50% powerful fungicide 50 ml, Gam 5 ml, add 40 kg of water spray, spray every 7 to 10 days, even 2 times for 3 times. Wheat sheath blight: in the early stage of wheat jointing, spray the base of wheat stem with 5% Jingangmycin water agent 100ml / mu, 50kg / mu and 50kg / mu. Wheat powdery mildew and rust: 50 grams of 20% strychnine emulsion per mu, 60-70 kg of water, spray at the beginning of the disease. Wheat aphids: use 10% imidacloprid or 3% acetamiprid wettable powder 10 grams per mu, spray 50 to 60 kilograms of water. Wheat red spider: use 2% avermectin 15ml per mu, spray 30kg to 40kg of water, and control gray planthopper to prevent cluster dwarf disease. Underground pests: after the wheat turned green, the underground pests began to move up. When the damaged plant rate of wheat seedlings reached 3%, 3% phoxim granules 2: 2.5 kg / mu could be used to mix 50 kg of fine soil, spread along the ridge, and then hoe. You can also use 50% phoxim EC 20g 30ml, water 300ml 500ml, stir-fried corncob, bean cake or wheat bran 1kg 1.5kg, sprinkle it into the wheat field in the evening. Click to get more wheat planting technology click to get more grain planting technology