The magnitude of the light intensity directly affects the photosynthesis of the plant. Plants that have not been illuminated for a long time will die. In the winter, the light intensity is increased and the light quantum recorder is used to measure the change in light intensity to avoid excessive light intensity. It is too small to affect crop yields. There are several ways to increase the intensity of light: Artificial light is a common practice, using light bulbs in rainy weather and at night to increase light intensity. Reasonable pruning branches, the excess foliage treatment, improve lighting conditions. Maintaining the clean condition of the shed film will increase the light transmittance of the shed film.
In winter, when the temperature is relatively low, it is also necessary to increase the temperature. By using a temperature and humidity monitor to Beijing, the temperature and humidity in the environment are monitored for changes in temperature and humidity, and adjustments are made to understand the optimal temperature and humidity of the growing plants. In the winter, the method of adjustment is to cover the plastic film. It is only beneficial to raising the ground temperature and reducing the air humidity in the greenhouse. The reflected light formed after covering the plastic film can also increase the light intensity of the base of the vegetable and make up for the lack of direct light at the base. This is more sensible.
In the cultivation of greenhouses, it is necessary to detect various indicators in the environment. The detection items in the environment include: temperature, humidity, light intensity, etc. These factors will affect the growth and yield of plants. Monitoring of these factors can be used. Professional testing equipment, such as temperature and humidity monitor to detect the temperature and humidity in the environment, light quantum recorder to detect the light intensity in the environment.
There are many kinds of FRP profiles, such as FRP round pipe, FRP square pipe, FRP rectangular pipe, FRP round bar and FRP i-bar.
The basic components of FRP profile are resin and glass fiber (including cloth, felt, etc.). It is reinforced with fiber (including glass fiber, carbon fiber, organic fiber and other metal, non-metal fiber) and resin (mainly epoxy resin).Polyester resins, phenolic resins) are composite of other auxiliary materials (main auxiliary materials: mold release agent, curing agent, catalyst, sealing agent, UV light stabilizer, mold cleaning water, gel coat, etc.).It has high temperature resistance, corrosion resistance, high strength, low specific gravity, low moisture absorption, small extension and good insulation and other excellent characteristics.
Fiberglass Square Tube,Fiberglass Square Tubing,Fiberglass Tube,Square Steel Tubing
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