First, the characteristics of damage. Adults and nymphs clustered on the back of leaves and sucked plant sap, causing the leaves to turn green and yellow, causing the plants to grow weak, to the death of the whole plant, and can also cause the honeydew leaves and fruits to produce coal pollution and affect the photosynthesis of plants. Second, the greenhouse insects. 1. Adults, weak resistance, easy to prevent and control. 2. Eggs, more resistant, general agents difficult to control. 3. Nymphs, divided into early nymphs and old nymphs, early nymphs are easy to control, older nymphs resistant to drugs. 4. 蛹 蛹 比较 比较 比较 比较 比较 比较 比较 比较 比较 比较 比较 比较 比较 比较 。 。 。 。 。 。 。. Third, the greenhouse whitefly is difficult to control the reasons. 1. The life cycle is short, and it can be completed in 8 to 9 generations in one year. The common generation overlaps in the greenhouse, which makes it difficult to control. 2. Each adult can produce 150 eggs, the reproduction rate is high, once the damage spreads, it is difficult to control. 3. Whitefly, egg, and old-age nymphs are resistant to drugs, and it is difficult for general agents to control them. Fourth, the main living characteristics of the greenhouse whitefly. 1. In the cold regions of the North, it is not possible to live outside the winter, and only winter plants can be harmed. 2. Adults tend to be tender and prefer to lay eggs on the upper leaves of the plants. 3. Adults tend to yellow and like to plunge into yellow objects. Fifth, prevention and control methods. 1. Incubate insect-free seedlings to prevent greenhouse whitefly from entering the greenhouse with seedlings. 2. Eradicate the weeds in the greenhouse and bring them out of the house to prevent the greenhouse whitefly from flying to the seedlings. 3. Fumigate or spray with chemicals before planting to kill greenhouse whitefly in the greenhouse. 4. Greenhouse Vents and Doors plus Insect Insect Nets to prevent migration of greenhouse whitefly adults to the greenhouse. 5. In the greenhouse, hung yellow traps to kill greenhouse whitefly adults, hung 20 to 25 yellow boards per acre, pay attention to the height of the yellow boards should be consistent with the upper leaves of the plants. 6. Note that alternate medication, once every 7 to 10 days, and even prevent 3 to 4 times, so as to prevent pests produce resistance, but also to solve the difficulties of overlapping generations of prevention and control problems. 7. Commonly used pharmaceuticals include: Fluoxetine 1000 times solution; Indoxacarb 1000 times solution; Azadirachtin 800 times solution; Deltamethrin 3000 times solution, Fenvalerate 2000 times solution, etc. VTM sampling kits are designed for the collection, preservation, and transport of viruses, chlamydia, mycoplasma, and ureaplasma urea. They are now widely used for sampling and transporting prior to virus detection. MandeLab's VTM kits provide a safe and convenient way to collect and transport virus samples. Nasal swab kit virus sampling tube,Used to collect samples of secretions from the throat or nasal cavity, Disposable Jiangsu iiLO Biotechnology Co., Ltd. , https://www.sjiilobiotech.com