How to prevent and cure corn rough shrinkage disease?

How to prevent and cure corn rough shrinkage disease? Also asked netizens to help introduce the method of corn rough dwarf disease is a virus disease transmitted by gray planthopper, farming network sorted out the prevention and control methods of corn rough dwarf disease, listed below for netizens' reference. Prevention and control methods of maize rough dwarf disease: first, select resistant and disease-tolerant maize varieties: according to the investigation in recent years, there are some differences in the occurrence of diseases among varieties. Nongda 108, Zhengdan 958, Ludan 50, Ludan 981, Ludan 984 and other varieties had a mild disease, and the rate of diseased plants was less than 5%. Second, the use of agricultural control: wheat, corn and other crops before sowing and harvesting to remove field edge, gully edge weeds, intensive cultivation, timely weeding, in order to reduce the source of insects. Spray 40% omethoate EC 1500 times and 50% methamidophos EC 1500 times on cornfields and surrounding weeds. Properly adjust the sowing date of corn to make the seedling stage miss the epidemic period of gray planthopper. Reasonable arrangement of planting methods. Strengthen field management, topdressing and watering in time to improve plant disease resistance. Combined with the seedlings, the diseased plants should be removed in time to reduce the diseased plants and virus sources, and the seriously affected plots should be changed to legume crops or sweet and waxy corn as soon as possible, so as to increase economic income. The third method is to adopt chemical control: first, seed dressing or coating with internal absorption insecticides, which can be mixed or coated with 60% Gaoqiao or 40% methyl isosinophos according to 0.2% of the seed amount; second, chemical control should be carried out before emergence. 10% imidacloprid can be sprayed per mu. Third, after the emergence of maize seedlings, spray spray on the field and around the plot to control gray planthopper in the third and fourth leaf stage of corn. The medicament can be sprayed with 30-40 kg of water with 40% monocrotophos EC 1500 ml 2000 times, or 40% omethoate EC, 50% parathion EC 1000 times or 5% Regent suspension 30ml or 10% imidacloprid 15g, or 4.5% cypermethrin 30ml or 48% chlorpyrifos 60-80ml, 30-40kg water spray. Spray try to be uniform and thoughtful, prevent and cure again every 7 days, in order to ensure the control effect. And achieve a unified time, unified medicament, unified method, unified application, to improve the control effect. Can also be in the gray planthopper transmission period, especially before the corn 7-leaf stage spraying 2.5% aphid EC 1000 times, once every 6-7 days, spray 2-3 times, can get twice the result with half the effort. Methods fourth, strengthen field management, improve plant disease resistance: reasonable fertilization and irrigation, strengthen field management, shorten maize seedling time, reduce the chance of virus transmission, and improve maize disease resistance. Practice has proved that increasing the application of organic fertilizer, adjusting the proportion, dosage and fertilization of N, P, K fertilizer, doing a good job of formula fertilization, increasing the application of trace fertilizers such as zinc and iron, and improving plant disease resistance can effectively reduce the occurrence of the disease. Click to get more corn planting techniques click to get more food crop planting techniques