There is skill in adjusting the night temperature after covering vegetables
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.
Our company is mainly engaged in the production of NATURAL PLANT EXTRACT raw materials, and is a famous supplier of plant extract raw materials in China.
Vitamin is a kind of trace organic substance that people and animals must obtain from food in order to maintain normal physiological functions. It plays an important role in human growth, metabolism and development. Vitamins in the body neither participate in the formation of human cells, nor provide energy for the human body.
Amino acids are organic compounds containing basic amino and acid carboxyl groups. A compound formed when the hydrogen atom on the carbon atom of a carboxylic acid is replaced by an amino group.
The following are the main recommended vitamin and Amino Acid raw materials.
Vitamin, amino acid, vitamin B1, vitamin B2, hydroxy acid, glutamine
Shaanxi Kepler Biotech Co.,Ltd , https://www.keplerherb.com