The grass screen that has not been removed shall be covered by a protective film. The straw curtain may be covered tightly, and both ends may be fastened with wire or rope, and the two sides may be pressed with a pressure-coated cement bag to prevent the rain from getting wet after the wind blows open the film. Grass blinds. In the rainy shed, it is necessary to use two membranes for heat preservation. The rainy days are very harmful to the straw sheds in the greenhouse. Some vegetable farmers chose not to put straw drapes. At this time, the two films removed should be covered again in time to prevent the temperature in the booth from being too low and causing a low temperature hazard. Ensure that the daytime temperature in the greenhouse is controlled at 28°C~35°C and nighttime temperature is 16°C~18°C. When the weather turns fine, it is necessary to wipe the film in time. After a gale and rainfall, a lot of dust and dirt will remain on the film, affecting the sight of the vegetables in the shed. Therefore, after heavy winds and rains, the mop should be manually wiped to increase the transparency of the film. If the greenhouse covered with straw curtains is cleared after continuous rainy weather, it is necessary to prevent "flashing seedlings" first. Even if the sky is suddenly cloudy, the method of “pulling flowers and spraying warm water†should be adopted. The grass curtains should be gradually separated. If the seedlings appear wilting when they are pulled, they should be put down and the leaves are sprayed with warm water. Prevent transpiration from causing rapid loss of leaves and wilting. Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.wzcelecare.com