The characteristics and application of shading nets
Sunshade net, also known as sunshade net, is a new type of specialized protective covering material for agriculture, fishing, animal husbandry, wind protection, soil cover, and other fields that has been promoted in the past 10 years. With the widespread application of shading nets, shading net manufacturers have also entered an unprecedented stage of prosperity.
After covering in summer, it plays a role in blocking light, rain, moisturizing, and cooling. After covering in winter and spring, there is also a certain degree of insulation and humidification effect. Generally, leafy vegetables planted in winter and spring are covered with a shading net directly on the surface of the leafy vegetables (floating surface cover) to prevent low-temperature hazards. Due to its light weight, it only weighs about 45 grams per square meter, and it will not crush, bend, or reduce the commercial value of already grown tall leafy vegetables. And because it has a certain degree of breathability, the surface of the leaves remains dry after covering, reducing the occurrence of diseases. It also has a certain degree of transparency, and after covering it, it will not "cover yellow and rot".
Floating surface covering was carried out in the greenhouse for cold protection, but it was found that when covered with a sunshade net floating surface at -6 ºC outside, no significant amount of ice was found on the celery leaves; The control group in the single-layer greenhouse, especially the upper and middle leaves, have frozen hard, and the temperature of the covered group is 1.5 ºC higher than the control group.
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