Adjust suitable temperature and light. The temperature management indicator is recommended to be maintained at 25 to 30°C during the day and 15 to 18°C ​​during the night. Before mid-September, the outside temperature was still high and the lighting was strong. At this time, the temperature and light management was mainly based on the shade and temperature. It is recommended to open all greenhouses, greenhouses and lumbar outlets in the daytime and ventilate day and night to reduce the temperature and humidity in the sheds. In sunny weather conditions, the conditional blocks are recommended to cover the shade of mobile sunshade nets from 11am to 3pm. Strengthen plant management. Timely removal of crop side branches, old leaves and diseased leaves increases ventilation and light transmission, reduces the temperature inside the shed, and can also increase nutrient accumulation to reduce the mechanical damage to crops and control disease. In general, tomatoes and cucumbers maintain about 16 functional leaves, eggplants maintain 35 to 40 leaves, and peppers guarantee about 40 slices. Science water and fertilizer management. Greenhouse fruit and vegetable still insist on the principle of "few times" in the management of water and fertilizer. According to the characteristics of the crop's fertilizer requirements, it can be top-dressed in the fruit enlargement period. It is recommended to adopt drip irrigation method. Before the end of September, every five to seven days, watering and fertilizer should be applied once. Each irrigation should be 6 to 10 square meters/mu, and each combination of drip irrigation and fertilizer should be 3 to 5 kg/mu. Fruits and vegetables in solar greenhouses are drip-irrigated in a timely manner after planting, generally 15 to 20 m2/mu; in the seedling stage and flowering stage, each drip irrigation is performed 1 to 2 times, and each irrigation is 6 to 10 m3/mu, each time combined with drip irrigation and fertilizer. 3 ~ 4 kg / mu; fruit set (fruit) after every 4 to 8 days drip once, each irrigation 5 to 10 square / acre, each combined with drip irrigation and fertilizer 3 ~ 5 kg / mu. Good pest control. In the prevention and control of pests and diseases, we must implement the plant protection policy of “prevention-oriented, comprehensive prevention and controlâ€, pay attention to observation and early detection, and timely control when spotting occurs. Before mid-September, attention should be paid to the prevention and control of pests such as whitefly, tea saponin, aphids, and viruses, verticillium wilt, downy mildew, and powdery mildew. After entering the month of October, due to the gradual decrease in ventilation, the humidity in the greenhouse increases, and low temperature and high humidity can easily lead to diseases such as gray mold and downy mildew. At the same time, due to the decrease of the outside temperature, the temperature of the locusts and whiteflies tends to be higher in the shed. Because of the high regional relocation, the phase should focus on strengthening the application of smoke agent drugs and insect nets. At the same time, the insect nets should be carefully inspected to find loopholes and remedies.
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