In recent years, the effectiveness of summer vegetables has been good. A considerable number of farmers have adjusted their mouths to plant summer vegetables. However, in the hot summer season, high temperature and strong light have brought great inconvenience to the management of vegetables. Vegetables are prone to sunburn, flowering and fruit setting problems, lack of ingredients, and harm to medicines. The reporter recommended that the current greenhouse vegetable management focus on the following three points: High temperature, strong light damage. If the vegetables in the shed are under high temperature and strong light conditions for a long time, high-temperature obstacles may easily occur, such as cucumber wilting, tomato umbilical rot and so on. In short, the vegetable farmers must guard against the damage caused by high temperature and strong light to the vegetables in the greenhouse. The solution is as follows: cover shade net, splash mud or ink, spray cooling agent, etc. In addition, because the temperature difference between day and night is too small, it is easy to cause the plants to grow. It is recommended that the farmer spray more than 1500 times to adjust. Prevent pests. As the temperature in the shed rises, the gray mold, sclerotinia, and cotton rot that are suitable for low temperature and high humidity conditions gradually decrease, but it makes powdery mildew and bacterial diseases become popular. It is recommended to spray chlorothalonil 600 times and 3,000 times the amount of streptomycin 5-7 days to prevent various diseases. Virus diseases should be strengthened under high temperature and drought conditions. The virus A500 times + Ningnanmycin 300 times + zinc leaf fertilizer can inhibit the occurrence and prevalence of viral diseases. For insect pests, it is recommended that vegetable farmers focus on preventing whiteflies, thrips and aphids. In addition to physical and biological control methods, vegetables, imidacloprid, bufalin, and avermectin may be used for prevention and control. Prevent injury and fertilizer damage. The vegetables are under high temperature and strong light and their metabolism is strengthened. If the spraying times or the anthers of this period are still diluted according to the winter multiples, it is very easy to cause leaf injury and hormone poisoning; the amount of fertilizers and spray fertilizers is too large and can easily cause damage. Fat damage occurs. Here, it is recommended that vegetable farmers use drugs cautiously, especially anthocyanins or plant growth regulators that have the role of controller; when fertilizing, pay attention to balanced fertilization and formula fertilization; foliar dressing to boron, calcium, magnesium, etc. Elemental fertilizers dominate.
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