High temperature days vegetables should be managed like this

1. Shading net cooling and high temperature weather advocates the use of shade nets to cover the top of the greenhouse to reduce the temperature inside the shed and reduce the impact of high temperature. For leafy vegetables that are not resistant to high temperature, the shade net can be used to cool down from 10:00 am to 3:00 pm in high temperature period. Other vegetable varieties should reduce the coverage time of the shade net according to the high temperature resistance of the crop or even cover it. In the vegetable and melon seedling stage, it is necessary to shave all day before the emergence of the seedlings.

2. Scientific fertilizer and water management According to the principle of “thin fertilizer and diligence”, fertilization is advocated, and the application of water and fertilizer integration technology is advocated. The noodle cover has the dual functions of soil conservation and cooling. The open vegetables advocate the application of straw or other crop straw to cover the noodles, combined with the application of phosphorus, potassium fertilizer, and Bishui to improve the resistance of vegetables. Leafy vegetables should be micro-sprinkler irrigation technology.

3. Strengthening pest and disease control In the high temperature and drought season, there are mainly diseases such as blight, bacterial wilt, virus disease, Spodoptera litura, beet armyworm, B. tabaci, and bean curd. It is necessary to take comprehensive control measures: Soil disinfection measures such as sputum, irrigation, and high temperature shacks reduce the number of soil pests and diseases; second, the use of insect nets, insect attractants, insecticidal lamps, swatch traps, plant attractants and other measures to reduce the amount of pesticides; The third is to master the high-efficiency, low-toxicity and low-residue counterpart pesticides in the early stage of the disease and in the low-age period of the pests. Spray control in the morning and evening when the temperature is low, prevent plant phytotoxicity, ensure personal safety, and pay attention to strict safety intervals.

4. Do a good job in the preparation of autumn vegetables. The vegetable seedbed should be kept in a humid state. In addition to watering in the morning and evening in the continuous high temperature, the horses can be watered in the evening for 3~5 days to ensure the soil moisture in the seedbed and meet the water requirements of the seedlings.

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