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目前,在保护地栽培中,国产农膜在湿度较高、棚内外温差较大的情况下,棚内薄膜表面易形成雾气、水滴,棚内湿度高,降低透明度,影响作物生长。如采用无滴薄膜,成本比普通农膜增加1倍,且防水效果仅3个月左右.河南鹤壁市浚县农业局用普通农膜喷洒面粉作为防水滴剂,经试验,示范,成本低,效果好。
At present, in the protective cultivation, domestic agricultural plastic film in the humidity is high, the temperature difference between inside and outside the shed is large, the shed film surface easy to form mist, water droplets, greenhouse humidity, reduce transparency, affecting crop growth. Such as the use of drip film, the cost of ordinary plastic film increased by 1 times, and the waterproof effect is only about 3 months.Hebi Hebi City, Henan Province Bureau of Agriculture use ordinary agricultural film spray flour as a waterproofing agent, the test, demonstration, low cost, Good effect.