During the wheat harvest season, the spring oysters were replaced with vegetables, and some plots of locusts lost their parasitic habitat and they had to re-find their feeding sites. Although locusts on crops such as locusts and wheat do not belong to the same category, and damage crops are different, locusts have the property of trial feeding, which can lead to large-scale transmission of viral diseases. The migration and spread of aphids, coupled with the environmental conditions of high temperatures and droughts in summer, can easily cause the occurrence of vegetable virus diseases. Therefore, this period of time is a peak of virus disease.
First, cut off the spread of the virus. Viral diseases are mainly transmitted by insecticidal insects such as aphids and whiteflies. Cutting off the transmission route of the virus is an effective measure to prevent and cure viral diseases. To prevent insect pests, set up an insect-proof net at the air outlet, hang a yellow armyworm board inside the shed to prevent pest invasion, and promptly use imidacloprid and acetamiprid when pests are found. Mice, buprofezin, etc. are sprayed on a regular basis to kill poisonous pests; attention is paid to management, and in carrying out agricultural operations such as picking and snoring, try to avoid mutual contact between the plants and reduce the probability of virus transmission.
Second, nurture strong trees to improve plant resistance. The plant itself has a certain resistance to the virus. The stronger the plants are, the stronger the resistance to the virus is. Therefore, the vegetable growers should strengthen the management of the greenhouse and make the plants grow robustly. On the one hand, provide adequate nutrition for the plants, apply enough base fertilizer, and reasonably apply fertilizer after planting. You can use full-water-soluble fertilizers such as Haolipu and Fangrun in conjunction with roots, Apollo 963, and other roots to raise roots and foliar sprays. Zinc fertilizer and other trace elements and amino acids, nucleotides, mushrooms, protein, etc., add leaf nutrition, improve resistance. On the other hand, we must control the temperature and humidity. For the characteristics that virus diseases are easy to occur under high temperature and drought conditions, the following regulation and control work should be done in the management of greenhouses: ground water or sprinkler irrigation facilities can not only increase the humidity in the greenhouse, but also reduce the greenhouse temperature. Timely cover the shade net, reduce the greenhouse temperature, but also pay attention to take measures to reduce the night temperature within the shed, reduce nutrient consumption and inhibit the occurrence of viral diseases.
Third, drug control. Virus disease has no specific drugs and can prevent it from being treated. A virus, Ningnanmycin, brassinolide, zinc fertilizer, etc. can be used to increase plant resistance and inhibit viral disease.
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