Shading net is also known as shading net, which is a new type of protective covering material for agriculture, fishery, animal husbandry, wind prevention, covering soil and so on. Summer coverage after a light, rain, moisture, cooling effect. Winter and spring cover after a certain amount of heat preservation humidification. General winter and spring leaf vegetables planted in the sun-Shade Net cover directly on the surface of leaf vegetables (surface cover), in case of low temperature damage vegetables sun-shade net, because of its light weight, every square metre only 45 grams left and right sides, already grown in the high tree leaf vegetables don't overwhelm, bending, also reduce the commercial. And because it has a certain permeability, after covering the leaf surface is still dry, reducing the occurrence of disease.