At the moment, it is the season of planting vegetables in greenhouses. The early results have already blossomed, and later transplanted into the ground. At this time of the year, there are such insects that occur every year in greenhouses. Today, we will simply remind you of the situation and hope that everyone can prevent it early. First, Hummer Hummer can be said to be a wild horse in the greenhouse in recent years, whether you are pepper eggplant, cucumber or tomato, pepper, basically happen. Because the thrips often get into the flowers and the speed of reproduction is fast, it is very laborious to fight. What is more terrible is that if there is more, the virus may be infected. After the cucumber seedlings were damaged by the thrips, the leaves appeared to be dotted with a layer of skin. In this period, since the cucumber has not yet flowered, the plant is relatively small, and the medicine can be evenly sprayed to various parts, so that it is relatively easy to control, and the medicine can be uniformly used in the evening, and the medicine must be ensured on the front and back when the medicine is used. The eggplant is damaged by the thrips and follows the veins. It feels like a layer of dust and debris on it. This is the symptom of the thrips. If you look carefully, you can see some brown slender worms crawling. That is the hummer. . After seeing the symptoms of the veins in the picture above, look at the back of the leaf and look closely. Those small, small, brownish-yellow things are the Hummer. The worm is relatively small. If you eat it, it can't eat much. It doesn't hurt the crop very much. But because it feeds the upper leaves and the new tissue, it will cause a new crop. The leaves are deformed, which seriously affects normal growth, and it is possible to spread viral diseases. Regarding the prevention and control of this part of Hummer, everyone is reminded of these points: A. Preventing in advance, Hummer is generally easy to occur under relatively high temperature and dry conditions, and the greenhouse in the early stage of the greenhouse is just this environment, so everyone should do a good job of prevention, and add the medicine to fight the horse when the disease is hit. If you go in, you can use bifenthrin, acetamiprid, thiamethoxam, etc. If it happens, you can use ethyl doxorubicin or trifluoromethylpyrazine to prevent the thrips. ; B, evening medication, add silicone additives, because Hummer has phototaxis, so it is usually hidden during the day, so once there is a thrips in the evening, the drug is better, in order to increase the probability of contact with the thrips, fight drugs It is necessary to add silicone additives at the time. Adding and not adding are absolutely two concepts; C, timely control after the occurrence, if there is no prevention in the early stage to shorten the interval between medications, increase the amount of liquid in a timely manner, such as 3 days to fight drugs once, hit the game when hitting. Second, whitefly Greenhouse whitefly, whitefly, and Q-type whitefly, these terms are familiar to everyone, they are what we usually call the little white moth. For whitefly, the biggest harm is the transmission of viral diseases, especially the yellow leaf curl virus disease. It is mainly transmitted by the whitefly, and if it controls the whitefly, it basically controls the TY virus. . In addition to the whitefly, there is also a greenhouse whitefly, which also spreads a part of the virus disease, and sometimes it also induces coal pollution, so it must be well controlled. In addition to causing viral diseases, coal pollution is also caused by whitefly. Once there is more white meal, it can secrete mucus and cause coal pollution. After the occurrence of coal pollution, it will seriously affect the photosynthesis of leaves and ultimately affect the yield. Quality, so it must be prevented in advance. For the prevention and control of Bemisia tabaci and greenhouse whitefly, the following points can be noted: A, seedling treatment, buy back seedlings before transplanting, whether it is acupuncture tray or root, it is recommended to use thiamethoxam and other agents to treat, one can long-term control of whitefly, and second, can stimulate root growth. B. On the insect net, prevent it in time, use a good insect net to avoid the whitefly flying from the outside to the shed in summer, and pay attention to the pre-preventive medication when planting tomatoes, peppers and eggplants. Now the experienced farmers are 3-4 I took a potion once a day to prevent the whitefly and whitefly, and the control effect was very good. C. If there are many cases, you can use the smoke agent, first eliminate most pests (pay attention to choose high-quality, safe smoke agent), and then use the spray of the medicine to prevent the remaining. D. Remember to prevent viral diseases. Once you have found white powder mites and whitefly in the shed, you should use the medicine to control these little white moths. Remember to add the medicines to prevent and cure viral diseases. Bemisia tabaci is usually poisonous. If you only prevent pests and prevent viral diseases, then the virus in the greenhouse may occur a little after 2-4 weeks after the pests occur. Well, the insects that need attention in the early stage of greenhouse vegetables will be introduced to you first. In the next part, we will introduce aphids and several lepidopteran larvae. More pesticide knowledge , please pay attention to China Pesticide Network (Source: 191 agricultural capital) Zhoushan Jinsheng Bimetallic Plastic Machinery Factory , https://www.jinshenggalloy.com