Maize dwarf mosaic disease is a virus disease transmitted by aphids. Once infected, the whole plant of a corn plant is susceptible to disease. The growth of the plant is thin, short, and yellow. It seriously affects the normal growth and development of the plant and has a great impact on yield. The sooner the disease is affected.
1. For fields with lighter disease and better growth, remove diseased plants and spray protection. Virus inhibitors can be added with 0.3-0.5% potassium dihydrogen phosphate and other foliar spray control.
2, the difference in the growth potential of the corn field, plant strain rate as high as 50%, plant height less than 1 meter of the disease, it is recommended to remove the destruction, ordering early-maturing beans, etc., in order to make up for the loss.
3. Because corn dwarf mosaic disease is a viral disease, once it happens, there are almost no effective measures to prevent and control. Therefore, prevention and control should be focused on prevention and control. In the next year, planting corn should first use resistant and disease-resistant varieties such as Zeyu 34 and Danyu 12 to eliminate high-intensity varieties; secondly, strengthen cultivation and management measures, carry out plastic film cultivation, appropriate early sowing, and strengthen water and fertilizer management, etc. In order to improve the host's resistance to diseases, the third is to reduce the source of toxicants and mediators, use non-toxic seeds, to avoid intercropping, interplanting, as much as possible to remove weeds in the fields, and, where possible, control of corn seedlings aphids.
Ultrasonic water meter is a new type of water flow meter, by detecting the ultrasonic beam propagation in the water and tide by speed changes generated, which analyze and process water flow rate. Ultrasonic water meter is the use of ultrasonic time difference principle, the use of industrial grade.
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