1. There are many species of fleas that are harmful to Solanaceae. They are mainly Ochreospermum and cotton red spiders. Adult and young larvae concentrate on sucking sap at the back of the leaf or on the young part of the host. The damaged leaves become thicker and stiffer, become smaller or narrower, and the back of the leaf is yellow-brown or gray-white, oil-like, and the leaf margin curls downwards. Young stems turn brown. Tufted or bald. Buds deformity, brownish brown, rough, dull, dwarfed plants. There are more than 20 generations a year, and generations overlap. In winter, it can cause winter or breeding damage in greenhouses, and in March and April, it can damage large, middle sheds and open-air vegetables. Relying on crawling, wind power, agricultural implements, vegetables, etc., it spreads and spreads. At the time of origination, there is an obvious stage of the spotting, which is a crucial period for prevention and control. The most severe damage occurred from July to September in a year. After October, the temperature decreased as the temperature decreased. The cub prefers warm and moist environmental conditions. Adult nymphs are more active and have the habit of transferring females to the young part of the phytoseiformes. Eggs are prolific on the back and tender buds of young leaves, hatched after 2 to 3 days, and young (if any) during the pod period 2 to 3 days. Females are mainly male and female, and can also be parthenogenetic. Control methods: Weeding the weeds in the fields, removing litter and burning them together. Spray pesticides in time when spotting occurs: commonly used agents are 1.8% EDT, 2000-3000 times, or 1.8% EMU, 2000-3000 times, and 5% Cascade, 1000-1500 times, or 5% thiazolydine emulsifiable concentrate 2000 ~ 2500 times liquid; 10% Buzhi emulsifiable concentrate 2000 ~ 3000 times liquid, or 73% ketal emulsifiable concentrate 1000 ~ 1200 times, focus on spraying the back of the upper tender leaves, tender stems, flowers, Growing points and young fruit and other parts, and pay attention to alternating rotation medication. (Wang Hanrong, Planting Institute, Zhejiang Academy of Agricultural Sciences)
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