How to prevent and control wheat virus disease? (1) Wheat yellow dwarf disease prevention and control method 1 Appropriate agricultural control sowing, change the wheat field ecological environment, remove weeds and reduce the source of insects. 2 Chemicals control aphids, wheat aphids many natural enemies, if the amount of scandium is not much, generally do not spray control, can use natural enemies to play its natural control role. If a large amount of locust reaches the prevention and control index, it is necessary to spray and control it. The use of pharmaceuticals: 50% anti-inferiority wettable powder, 6 to 8 grams per acre, 75 kg of water spray; or 40% omethoate EC, 50 ml per acre, 75 kg of water spray. Spraying insecticides in time can effectively control the epidemic of late diseases. (2) Wheat bush dwarf disease prevention and control methods: 1 Agricultural control intensive cultivation, improve the quality of sowing; timely eradication of wheat fields, weeds on the ground to eliminate potential insects, breeding sites. 2 Pharmaceutics control Seed treatment of virus-infected insects and prevention and treatment of spraying in spring. The focus of spraying is on wheat fields around wheat fields and near weeds. The medicine used was conducted in accordance with the method of controlling yellow wheat dwarf. (3) Method for controlling soil-borne wheat mosaic disease: 1 Select resistant varieties. Currently disease-resistant varieties have 6590 ~ 33, 6590 ~ 2l, Shijiazhuang Xiaohong, dwarf red white, planting in the production, played a positive role in disease prevention. 2 to strengthen the cultivation and management of late sowing: increase base fertilizer, early dressing, etc., have a certain effect on the reduction of disease. 3 strict quarantine to prevent spread. It is forbidden to transfer the seeds of the wards to disease-free areas, and to properly treat the sick and sick areas to prevent the spread of the disease.
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