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Light is the basis, and if there is no light, no more fertilizer, moisture, and the right temperature, it is useless, because the plant can not grow normally. Only under light conditions can plants perform photosynthesis, and only photosynthesis can synthesize various organic substances needed for plant growth. Visible light is very important for plants as they are for us. If there is no light, the synthesis of chlorophyll, the formation of anthocyanins, the absorption of water and transpiration, the flow of cytoplasm, and other life activities cannot be carried out. It is precisely because of this, the light box came into being. The light box can provide a variety of suitable environmental conditions, more suitable for the growth of plants than the natural environment.
Of course, different plants have different requirements for sunlight. If the plants are also divided into several types, such as the sun plants, more suitable for the sun, 70 - 100% of the sun's direct light is the best, if there is no sunlight, growth will stagnate, such as jasmine, rose, etc.; neutral plants There may be sunshine or no sunlight. 50-80% of the sun shines best in direct light. The demand for sunlight is not so strong, such as camellia and gardenia. The shade plants only need 20-50% direct sunlight. It is best to scatter light. Such as Golden Fern, Adiantum fern, Silver Fern and so on. In addition, there is also a very close relationship between the timing of flowering and lighting. Every day, the length of sunshine varies with the seasons. When a period of light is suitable, the plant will use this as a signal to have a sense of blossoming. Then we start to differentiate flower buds. We call this phenomenon "Photoperiod phenomenon." The change in the length of time of induction light is the leaf, especially the chlorophyll in the leaf, in which the chlorophyll content can be measured by the chlorophyll meter. In particular, the flag leaf, the topmost one, can not only increase production but also sense the length of light. Therefore, a suitable light box instrument can bring great convenience to forestry. An intelligent light incubator is an instrument that can provide the optimum temperature, humidity, and illuminance for plant growth. It can also control the light time to maximize photosynthesis of plants.
Pu rod and sheet commonly known as superior glue and spring glue, is a new synthetic material that is obtained by reacting a polymer polyol with an isocyanate and chain-linking, a plastic and rubber.Pu has chemical resistance, high elasticity, high pressure load resistance, high wear resistance, strong shock absorption, tear resistance, radiation resistance, and can maintain high in a wide range of hardness (Shore A10 to Shao D75) elasticity. Its excellent overall performance is beyond the reach of ordinary plastics and rubber.
According to the main structure of the polyurethane elastomer, PU is divided into two types: polyester type and polyether type.
Polyurethane Plastic Sheet,Natural Polyurethane Rubber Sheet, Polyurethane sheet, pu rubber sheet, polyether sheet
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