Most growers don't have the concept of prevention in advance when preventing pests and diseases, and many people only apply drugs when they see insects. In fact, they don't know that when they see the harm of mites, it has affected the quality and yield of crops, and then take measures to remedy it, but the effect is not well prevented in advance, and mites are different from other pests, and it is difficult to control after pests occur.

Generally, after mite damage, leaves shrink to a certain extent, or spider webs are spit on the back of leaves, and mites are between spider webs and leaves. Many chemicals do not touch mites after being sprayed on spider webs, and the control effect is greatly reduced. At present, the pesticides sold in the market to control mites are mainly compounded, and the control of mites lies in comprehensive management, prevention in advance and reduction of mite egg base.

Before the occurrence of mites, it can be prevented by combining pesticides, fungicides, foliar fertilizers and other chemicals. It is suggested that spirodiclofen and thiamethoxam should be sprayed every 15 d, and the water consumption should be 25 ~ 30kg per 667m2. It is suggested that it should be mixed with osmotic agents such as orange peel essential oil and silica gel and sprayed evenly on the whole plant, especially on the back of leaves, branches and ground, so as to reduce the number of mite eggs. After continuous use, there is basically no mite, and even if there is, it can be well controlled.

In the middle and late stage, after the occurrence of mites, it is recommended to use the following chemicals for prevention and control, which can be used alternately. 40% hydrazine-ethoconazole (composed of 30% bifenazate and 10% ethoconazole) is used to control red spider, tetranychus urticae and tea yellow mite, and the application amount is 15 ~ 20mL/667 m2. 27% abamectin spirodiclofen (composed of 2% abamectin and 25% spirodiclofen) is mainly used to control red spiders, and the application amount is 30 ~ 40 ml per 667 m2. 20% avermectin diphenhydrazine (compounded by 1% avermectin and 19% bifenazate) was used to kill red spider, tetranychus urticae and tea yellow mite, and the application amount was 15 ~ 20mL/667 m2.