Whitefly is one of the world's most important pests. Due to the widespread popularity of facilities such as plastic greenhouses, whiteflies have become important pests in protective cultivation in recent years, posing a serious threat to the production of various vegetables such as melons, solanes, and beans. Whitefly adults and nymphs suck host plant sap and secrete honeydew to induce coal pollution. Adults can also transmit certain viral diseases, often resulting in 2 to 30% reduction in yield. Whitefly adult body length 1 ~ 1.5 mm, female adults than male adults, pale yellow. The wing surface is covered with white wax powder, and when the wings are closed, the wings are synthesized on the body like a moth, so it is also known as the small white moth. Prevent whitefly to seize the following points: One is early. Whitefly is generally wintering in greenhouses, and it begins to lay eggs on the leaves of greenhouse fruit and vegetables in early spring. The use of drugs in the greenhouse in the early stage can greatly reduce the number of whitefly and reduce the spread of whitefly to the open air. The second is to use drugs to match. The most effective and low-toxic insecticides against whitefly are thiamethoxam (Aketai), nitenpyram, pymetrozine, acetamiprid, imidacloprid, buprofezin and bifenthrin. These pesticides are effective against whiteflies and promote rotational drug use. The third method is to use drugs. Whitefly is generally on the back of the leaves. Adults like to spawn on young leaves, spraying the leaves on the opposite side of the leaves and leaves. Cucumbers and watermelons are often severely damaged by whitefly because they have large leaves and do not easily spray liquid on the back of the leaves. The waxy layer on the whitefly is not easy to come into contact with the characteristics of the body. When the amount of insects is large, silicone additives or mineral oil must be added to facilitate the penetration of the agent into the body. In addition, according to the characteristics of the whitefly, which is easy to take off, it is necessary to be careful when spraying, and even the film can not be let go. The fourth is to control the defense. Whitefly can move close to air under windless conditions and can move long distances with the wind under windy conditions. This requires the relevant departments and farmers to work together to carry out unified prevention and control in the outbreak area of ​​Whitefly, and use different agents for continuous control for three days. The fifth is to combine physical control. Yellow powder was used to seduce the whitefly by using yellow powder. Can be painted on the board or cardboard with oil and butter, hung in the same height with the plant, sticky whiteflies, and other boards covered with powder and then re-apply oil and butter, and can be re-luring. There are reports of vacuum cleaners sucking whitefly, and farmers' friends may wish to try. Pure Semen Raphani Extract,Radish Seed Extract,Semen Aesculi P.E.,Semen Raphani Extract NANJING ZELANG MEDICAL TECHONOLOGY CO., LTD , https://www.hawfitness.com