If the light management turns fine after rain, snow and snow, the plant should have a process of gradually seeing light and gradually warming up. When the sun comes out, the grasshoppers are uncovered, and the vegetable farmers do not leave the Greenhouse, always paying attention to the changes in the plants. After the light, the temperature in the shed rises rapidly, the transpiration increases, the ground temperature is low, the root absorption capacity is weak, and the absorption and transpiration are unbalanced, causing the leaves to wilting. In severe cases, the plants will die due to physiological drought. Before the plant is about to appear wilting, it is necessary to put down the grasshopper in time, or put a grasshopper in a row for several days until the plant grows normally, and then normalize according to the temperature. These two methods are called cover back and cover flower. Water and fertilizer management For vegetables that have caused chilling damage, before the sun is revealed, water can be sprayed on the foliage to make it slowly heat up. For plants that are severely wilting and stop growing after continuous rainy and snowy days, the plants must be nutritionally adjusted and sprayed with exogenous phytohormones to promote hair growth. In order to restore the physiological capacity of greenhouse and greenhouse vegetables, it is advisable to use three-element compound fertilizers of nitrogen, phosphorus and potassium for melons and solanaceous vegetables, and 1% to 2% aqueous urea solution for leafy vegetables, and root vegetables. A 0.3% potassium dihydrogen phosphate solution and a 1% potassium sulfate aqueous solution were sprayed. Special attention should be paid to the fact that it cannot be sprayed in rainy and snowy days to avoid causing the humidity in the shed to rise and induce disease. After the soil management weather has cleared, the soil with high humidity is cultivated and soiled to make it breathable, increase the ground temperature and promote the growth of new roots. If the root system has been cold, after the soil is warmed and the roots are warmed, the fertilizer water can be poured once. However, the groundwater should be used for watering. The cold water should not be used on the ground. Avoid flooding with water. After watering, timely ploughing and arranging. When applying fertilizer, apply more biological fertilizers, activate the soil, increase soil organic matter, make the soil loose, increase the permeability, and promote root development. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Poultry Greenhouse,Poultry House For Breeding,Single Span Greenhouse,Single Span Poultry Greenhouse Qingzhou JuLong Agriculture Equipment Co.,Ltd , https://www.julonggrowtech.com