Do not have any virus in these four steps
Viral disease is a "cancer" of vegetables. It can prevent and cure, and must be prevented.
Reasonable watering to avoid arid environment
High temperature and drought shed environment can easily lead to high incidence of viral diseases. After the autumn sorghum vegetables are planted, the vegetable farmers not only reduce the temperature inside the shed by setting sunshade nets, spraying cooling agents, etc., the key is to properly water the plants. In general, vegetables are irrigated for about 10 to 15 days after the seedlings are slowed down to promote deep rooting. If the temperature is too high, the amount of water evaporation is too large, and when the soil is dry, water should be poured in time to increase the humidity in the shed. After that, depending on the soil conditions, dry watering should be avoided to avoid arid environment, but it should not be flooded with large water to prevent bacterial diseases at the base of other stems.
Removal of weeds in the shed and surrounding areas
Viral diseases mainly rely on the transmission of poisonous insects such as aphids and whiteflies, and it is necessary to cut off their transmission routes. It is recommended that the vegetable farmers timely remove the weeds in the shed and outside the shed, reduce the number of insect sources, and set up insect-proof nets at the top vents and front vents before planting the plants to cut off the transmission path of viral diseases. The worms are hanged in the shed, and the drugs are used regularly to prevent insects and smog.
Cultivate strong trees in the early stage to enhance plant disease resistance
Seedlings are planted in time after seedlings, appropriate water control and fertilizer control, cultivating and arranging, widening the temperature difference between day and night, promoting deep rooting and cultivating strong trees. Into the result period, reasonably retain the fruit, keep the plant growth balance, pay attention to the application of humic acid, chitin and other nutrient fertilizers with the water, and spray the amino acid foliar fertilizer on the foliar surface, rooting and protecting the leaves, to ensure Plants grow robustly and improve disease resistance.
Rational use of drugs to control the occurrence and development of viral diseases
Virus-borne plants should be removed immediately outside the shed to avoid infecting other healthy plants. Commonly used agents for the prevention and treatment of viral diseases include chemical pesticides such as virus A, bacteriophage, and ribavirin, which can be mixed with lentinan, dextran, oligosaccharide, gentamicin, amino oligosaccharide, Biological pesticides such as matrine stimulate the plant's own defense system and have a certain effect on the replication and spread of the virus.
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