After entering the winter, the temperature dropped significantly. At this stage, the majority of vegetable growers took measures to cover grasshoppers or heat preservation in a timely manner. At the same time, they reduced the time of air release. During the day, the temperature was increased as much as possible, and grasshoppers or thermal insulation at night was kept warm, which largely prevented the danger of cold waves. However, after the cold wave, the temperature will rise again. Under such circumstances, how should the greenhouse temperature be adjusted? Look at the growth of vegetables in the shed at night. Covers are not covered with insulation materials. They need to be adjusted to the nighttime temperature due to “foodâ€. For example, when the wintering sweet peppers at the seedling stage are used, this stage requires strong trees and tree growth. If the night temperature is too low, it will inhibit its growth and adversely affect the flower bud differentiation; the bitter gourd in the cucumber shed that has just been planted soon Can be taken to reduce the temperature of the greenhouse, the seedlings to control trees; and for the positive results of the greenhouse shed, it should take the practice of widening the temperature difference between day and night, to promote the transfer of photosynthetic products to the fruit, promote the expansion; for In color-changing tomato, it is necessary to use insulation to reduce the temperature difference between day and night, in order to increase the temperature of the shed, promote the color change, and at the same time prevent the hot and cold changes from drastically making the fruit surface “skinningâ€. Looking at the conditions of the greenhouse facilities Currently, there are new sheds with better heat insulation in each vegetable production area, as well as old sheds that have been used for many years and have poor insulation. The new shed can choose not to cover or cover the insulation material, and the old shed needs to be covered or covered. Look at the weather. During the day, the weather is clear, the temperature is high, and the temperature in the shed warms up quickly. If the greenhouse temperature in the early morning of the next morning can still meet the growing demand for vegetables, it can be covered or not covered; if the weather is cloudy, the temperature is low, and the shed is low. If the internal temperature is increased slowly, and if it does not cover grasshoppers or insulation, it cannot meet the growing demand of vegetables. It should be closed early to cover the insulation material. Am Deactivator ,Eas Am Deactivator,58Khz Deactivator,Am Eas Deactivator WENZHOU BOSHINE ELECTRONIC SECURITY CO.,LTD , https://www.boshine.com