棉花通风不揭膜育苗法,由于通透性好,排湿增温快,昼夜温差小,因而棉花苗出土快,生长整齐,苗壮苗匀,不易冻苗、烙苗,无高脚苗、僵苗,苗病轻,根系发达,栽后返苗快,成活率高。 1.选苗床、配土、制钵。 苗床应选在无病、地势平坦、排灌方便的田块,苗床以南北向为好,长度以每床青一亩棉苗为宜。然后,将腐熟充分、过筛的人类尿肥或优质农家肥200公斤、饼肥4 Cotton ventilation is not Jieyang film nursery method, due to good permeability, wetting and warming fast, small temperature difference between day and night, so cotton seedlings quickly, growth and tidy, Miao Zhuang Miao uniform, not easy to frozen seedlings, Stiff seedlings, seedling disease light, developed roots, planted back quickly seedlings, high survival rate. 1. election seedbed, with soil, system bowl. Seedbed should be selected in the disease-free, flat terrain, convenient irrigation and drainage plots, beds north to south as well, the length of cotton beds per acre is appropriate. Then, the decomposed, sieved human urine or high-quality manure 200 kg, 4 cake