Why do plants need light?
Take strawberries. Strawberries are light loving plants. If the light is not enough, it will lead to many bad conditions, such as: the leaves are easy to turn green or even yellow, the flowers are small or even without flowers, the fruit is small, sour, slow in coloring and ripening, the surface of the fruit is light red or white, the quality is poor, and the ripening period is delayed.
Therefore, in the winter when the sunlight is short or the snow is heavy, the artificial light source can be used to supplement strawberry properly, which can promote the growth and development of strawberry, promote the storage of nutrients, and provide the material basis for improving the quantity of flowers and fruits and the quality of fruits. In addition to improving the quality and yield, light supplementation also shortened the growth period and fruit maturity of strawberry. Scientific experiments and application practice have proved that light supplement is an effective means to promote the yield and income of strawberry.
The perpetual lamp has 430nm and 450nm blue violet line, while the ultraviolet lamp in hospital is 380nm, 430nm and 450nm are close to 380nm ray. Although there is no sterilization effect of 380nm light, long time irradiation has the effect of killing eggs, thus playing the role of killing insects and killing bacteria. 2, because laser belongs to monochromatic light, it has the function of expel all flies and insects. 3. More sunlight and less illness, this kind of light promotes the growth of crops, makes crops very strong, improves their resistance, so as to reduce the breeding of diseases and insect pests;