In the wheat harvest season, the spring oysters were changed, and some plots of locusts lost their “homeland†and they had to find new places to eat. Although locusts on crops such as locusts and wheat crops do not belong to the same category, and damage crops are different, locusts have the property of tentative feeding, which can lead to viral disease at the same time as searching for crickets to search for feeding crops. Scale spread. The migration and spread of locusts, coupled with the environmental conditions of high temperatures and droughts in summer, can easily cause the occurrence of vegetable virus disease. Therefore, China Agricultural Network recommends that the current period of time is a peak of virus disease.
Cut off the virus transmission route. 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. We must do a good job: Strictly prevent pests, set up insect nets at the air outlet, hang yellow sticky board inside the shed, prevent pests from invading, and promptly use imidacloprid and pyridine when pests are found. Insect mites, buprofezin, etc. are sprayed on a regular basis to kill poisoned pests; attention is paid to management, and crop operations such as picking and snoring are performed to avoid contact between the saps between plants and reduce the probability of virus transmission.
Cultivate 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.
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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