In northern China's winter and spring season, the price of eggplant on the market is generally 4-7 yuan/kg, and the highest price is 10.0 yuan/kg. Therefore, greenhouse eggplant is a high-efficiency project, but due to eggplant yellow wilt disease, bacterial wilt and root-knot nematodes and other soil-borne pests and diseases. This has greatly affected the production of greenhouse eggplant and the interests of the majority of vegetable farmers. Eggplant pest control and yield increase all require a good management method. In order to better provide vegetable farmers with technical microbiological fertilizer (click here for details), experts Jinbao will combine some high-tech to introduce planting points as follows:
2. Egg planting water management in spring There are multiple spring diseases and insect pests in the spring. We should do a good job of water management, which is good for pest control. Moisture management should follow the right amount of timely principles. Eggplants grown in the greenhouse are generally covered with plastic film. Therefore, pre-irrigation uses under-membrane submerged irrigation to effectively prevent ground water from evaporating. In addition, the reduction of air humidity in the greenhouse can reduce various diseases. After the eggplant grows at a later stage, the temperature can rise and the water can be poured. Watering should be done on a sunny morning because the ground temperature is quickly restored and there is enough time to exclude the moisture in the shed. Before April, the temperature was generally low and the amount of evaporation was small. Therefore, it is not necessary to apply too much irrigation to prevent the occurrence of humidity and the spread of disease. After April, the temperature rose rapidly and the growth of plants was accelerated, and the irrigation volume and times could be appropriately increased. After the greenhouses are watered, the greenhouses are closed for a short period of time to increase the temperature inside the greenhouses. When the temperature rises, ventilation and dehumidification can be performed in time.
3. Eggplant planting ventilation management in spring Spring temperature rises quickly The shed has more indoor humidity and more diseases. It is necessary to reduce the humidity in the greenhouse by releasing air and regulate the degree in the greenhouse to prevent the occurrence of diseases. The optimum temperature for eggplant during the day is 28 degrees Celsius, and the optimum temperature at night is 14-16 degrees Celsius. If the temperature is too high or too low, the flowering and the result are unfavorable, and it is easy to form a phenomenon of malformed fruit or fallen fruit. When the temperature in the shed rises by more than 30 degrees Celsius, it will start to wind. As the outside temperature gradually increases, the ventilation volume should be gradually increased. In the afternoon, when the outside temperature drops, it is necessary to cover the grasshopper in time to ensure that the temperature in the shed is always maintained within the range suitable for growing vegetables.
4. Spring eggplant pest prevention and control selection of disease-resistant varieties, reasonable pruning, timely removal of diseased leaves covered with black agricultural film to prevent the growth of weeds; the use of insect nets isolated insect source, with yellow or yellow coated oil to kill aphids, whiteflies and Liriomyza sativae; using a silver-gray agricultural film to avoid maggots. You can also use frequency vibration type insecticidal lamp to kill Hymenoptera, Plutella xylostella and so on. The main diseases of eggplant in protected areas include eggplant gray mold, eggplant anthracnose, eggplant bacterial leaf spot and so on; the insect pests mainly include thrips, tea astragalus, whitefly, etc., and appropriate chemicals should be selected for spraying according to different diseases. . For details, please contact Beijing Huaxia Kangyuan Technology Co., Ltd. Telephone toll-free hotline).
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Affordable Farming Fertilizer Production Methods Crop Science Fertilization Essentials: Microbial Fertilizers
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