Wheat sheath blight is a fungal disease mainly transmitted by soil. With the increase of the level of production, the promotion of high-yield varieties and the management of wheat fields with large-scale and large-scale fertilizers have become increasingly serious. After sowing, the germinating seeds will germinate, the buds will become brown, and the buds will rot and die. The diseased planting rate will increase significantly after jointing and the condition of wheat booting at the heading stage will develop rapidly. The rate of diseased plants will reach a peak at the filling stage, and the lesions Expanded, interconnected into a typical moire-like spot, later invaded the stem to cause rotten stems, and even the formation of withered ears, less fertility, and grain thin. The prevention and control of weeds in a timely manner can reduce the humidity in the field and improve the conditions for ventilation and light transmission in the field. The application of formula fertilization, top-dressing fertilizer, and nitrogen and potassium fertilizers combined with topdressing can effectively improve the disease resistance of plants and avoid partial nitrogen fertilizers. Caused by young and late glutinous rice seedlings, induced by disease increased harm. Chemicals for prevention and control of wheat sheath blight should focus on seed treatment, and severe disease fields should be supplemented with early spring fields. 1. Spring prevention and treatment: According to the investigation of the disease, early spraying to prevent, in the wheat rise period, if the field disease rate is 15% to 20%, 12.5% ​​per acre WP 20 to 30 grams Or 15% triadimefon wettable powder 50~100g or 5% Jinggangmycin liquid 150~200ml, optional one kind of water 50~75kg spray on the lower part of wheat plant, spraying again every 7~10 days Once, spray 2 or 3 times. In the booting stage, 15% triadimefon WP 50-100 g watered 60 kg spray per acre. If the simultaneous occurrence of pests can be combined with the control of wheat stubble, wheat spider arachnid and other pesticides, it can achieve the purpose of cure. 2. If sheath blight occurs early and heavy in the autumn seedling stage, when there is more rainfall in the spring and the disease may occur, the control index should be strictly controlled and the prevention and treatment time should be appropriately advanced. Rongcheng Jingyi Oceanic Technology Company Limited , https://www.jingyifoods.cn