The effect of photosynthesis on plants

Photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into carbohydrates. Photosynthesis is the basis for the survival and development of life on earth. Light is the energy source of photosynthesis, and it is also a kind of signal information that controls the light quality, light intensity and photoperiod of plant development. Light is also an important environmental factor affecting the production of facility crops.

Effects of Photosynthesis

The growth of plants is achieved by storing organic matter through photosynthesis, so light intensity and light time have a great influence on the growth and development of plants, which directly affect the strength of plant photosynthesis. Light intensity is a physical term that refers to the luminous flux of visible light received per unit area. Abbreviated as illuminance, the unit is Lux (Lux or Lx). The amount used to indicate the intensity of the light and how well the surface area of ​​the object is illuminated. Under natural light, the light saturation point of full sun plants is about 20000LUX, half sun plants are about 12000LUX, and weak shade plants are about 8000LUX. At present, due to full-spectrum LED plant lights, it is still unable to achieve the broad light band of natural light, so generally speaking, as long as the spectrum is correct, 8000LUX-20000LUX can satisfy full sun plants, half sun plants need about 4000-12000LUX, and weak plants need about 4000-12000LUX. Negative plants need around 1500-8000LUX.

The effect of light on plants

In northern my country, the sun altitude angle is low in winter, and the sunshine time is short, resulting in insufficient light for facility crops. In addition, the increasingly severe haze weather in northern my country has become an important factor affecting the production of facility crops. The continuous haze weather makes the plants lack of light, their photosynthesis is also reduced, and the yield of crops is seriously reduced. To solve this situation, make up Light is essential. In recent years, with the improvement of agricultural lighting technology, the use of plant lighting fixtures for crops has become a preferred solution, and artificial light sources are used for crops to obtain better product quality and commercial benefits.

In general, whether under natural conditions or under artificial LED plant light supplementary lighting conditions, it is necessary to first find out what kind of light intensity the plants need. The natural environment selects a suitable location and season for planting according to the light demand of plants. If natural light cannot meet the needs of plant growth, LED plant lights need to be used to supplement light for plants. If it is grown indoors, you need to choose LED grow lights with different uses and different light intensities according to the needs of the plants.