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塑料“遮阳网”覆盖是继农膜、地膜覆盖后的又一项蔬菜保护地生产新技术。日本70年代已采用此新技术进行夏季覆盖番茄、菠菜等多种蔬菜生产,效果显著,对番茄青枯病与裂果有显著地防效。我国从1983年引进“遮阳网”生产技术并试产成功;我省1989年用“遮阳网”不到200平方米,1990年预计在10万平方米以上。“遮阳网”又叫凉爽纱、寒冷纱。是用聚烯烃树脂为主要原料,通过拉丝后编织而成的一种轻质、高强度、耐老化,具有不同遮光率的网状新
Plastic “shading net” coverage is following the plastic sheeting, mulching after another vegetable production of new technologies. In the 1970s, Japan adopted this new technology to cover a variety of vegetables such as tomato and spinach in summer, and achieved remarkable results with significant control effects on tomato bacterial wilt and cracking. Our country introduced the production technology of “shading net” from 1983 and succeeded in trial production. In 1989, our province used “shading net” less than 200 square meters, and in 1990 it is estimated to be above 100,000 square meters. “Shade net” also known as cool yarn, cold yarn. Is a polyolefin resin as the main raw material, after weaving through the drawing of a light, high strength, anti-aging, with a different shade of the mesh of the new