sunshade net to absorb enougn sun shine
Sunshade net is made of polyethylene (HDPE), high-density polyethylene, PE, PB, PVC, recycled materials, new materials, polyethylene and propylene as raw materials, after UV stabilizer and oxidation prevention treatment, with strong tensile resistance, aging resistance,corrosion resistance, radiation resistance, light and other characteristics. Mainly used for vegetable, fragrant flowers,
edible fungi, seedlings, medicinal materials, ginseng, ganoderma lucidum and other crops conservation cultivation and aquaculture and poultry industry, to improve the yield and so on has obvious effect.
Sunshade nets are mainly used in summer, especially in the south. One person described it as "white in the winter in the north and black in the summer in the south". In summer, vegetable cultivation with sunshade net in southern China has become a major technical measure of disaster prevention and protection. The northern application is limited to summer vegetable seedling. In summer, the main function of covering the sunshade net is to prevent the exposure of the sun, the impact of the rainstorm, the harm of high temperature, the spread of diseases and pests, especially to prevent the migration of pests plays a good role.
Summer cover after a kind of light, rain, moisture, cooling effect; After winter and spring covering, there is a certain effect of heat preservation and humidification.
Moisturizing principle: after covering the sunshade net, because of the cooling and windproof effect, the exchange rate between the air and the outside of the cover area is reduced, and the relative humidity of the air is obviously increased. At noon, the humidity increase is the largest, generally increasing by 13% ~ 17%.
The humidity is high, and the soil evaporation decreases, increasing the soil humidity.The benefits of using a plant sun shade net
High temperature, scorching sun and showers in summer are easy to cause flower disease, burn and death. In sunny summer weather, the light intensity at noon will exceed 1-2 times of the appropriate light intensity of general flowers. If certain measures are not taken, most flowers will lose water and burn.
In addition to weakening the influence of direct sunlight, shading also has the effect of significantly cooling. According to tests, shading can generally reduce the temperature in the greenhouse by 4-5℃. Sunshade generally available plastic sunshade net, outer sunshade effect is better than inner sunshade, silver sunshade net effect is better than black sunshade net.
The function of plant sunshade net is shading, cooling and moisturizing. Prevent rainstorm, improve seedling rate; Prevention ofdiseases, birds and insect pests; Keep warm, cold and frost-proof.
1, shading, cooling, moisturizing. Shading can reduce light exposure by 35 to 65 percent. Reduce the surface temperature by 9℃ to 12℃, reduce the underground soil temperature by 5℃ to 8℃ 5 cm to 10 cm deep, reduce the surface water evaporation, and increase the relative humidity by 15% to 20%.
2, rain prevention, improve seedling rate. According to tests, covering the sunshade can reduce the impact of a rainstorm on the ground by one in 45. By adjusting the microclimate in the net, the seedlings grow normally and the survival rate is improved. Generally, it can increase the emergence rate by 10% to 15%, and increase the seedling rate by about 20%.
3. Prevent disease, bird damage and insect damage. The microclimate of temperature, light, water and air under its cover changed, which disrupted the breeding rules of insects and inhibited the occurrence of some diseases. It can effectively prevent birds and mice from eating seeds and improve the emergence rate.
4. Keep warm, cold and frost proof. Early spring and late autumn flowers and trees covered with sunshade nets, can avoid frost damage to flowers and trees directly.
