The symptoms of the cultivation of viral diseases in greenhouses after autumn fall are: (1) Mosaic type. The leaves exhibited varying shades of mottled symptoms, with varying degrees of shrinkage. (2) Deformity or cluster type of leaves. In the late stage, the upper part of the plant was obviously clustered, the internode shortened, the plant became shorter, and sickle-like protrusions appeared on the spotted fruit. (3) Stripe type. The main veins of the leaves are brown or black necrotic, resulting in falling flowers, fallen leaves, and falling fruit.
Comprehensive prevention and control strategies: (1) Select disease-resistant or disease-resistant varieties, such as Sujiao No. 5 and Jiangcao No. 2 etc. (2) Reasonable rotation, as far as possible not to be connected with the Solanaceae crop or neighboring. (3) Pay attention to seed processing. Can be soaked in 10% trisodium phosphate solution. (4) Cultivation includes full application of basal fertilizer; cultivating strong seedlings; mulching film, and appropriate early planting; strengthening shade cover, rational close planting, and strengthening fertilizer and water management. (5) Chemical control. Use 10% imidacloprid wettable powder to control aphids. After colonization, spray 20% virus A500 times, spray once every 7-10 days, and apply drugs 2-3 times.
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