棉花地膜覆盖栽培,在我省已经过三年的试验示范.据省棉麻所试验,与不覆盖棉田相比,盖膜棉田在苗蕾期间日平均地温(5厘米土层)可提高3～5℃;从播种到开花期间可增加积温250℃左右,有利于改善我省棉花生产前期低温的生育条件,出苗早5～6天,现蕾、开花早8～9天,开絮早15～20天.有效生育期相对延长半个月左右,霜前花高达80%以上.1980年全省多点试验和大面积生产示范共550 Cotton mulch cover cultivation in our province has been tested for three years demonstration.According to the province of cotton and linen tested, compared with no coverage of cotton fields, cotton film cover in the bud during the average temperature (5 cm soil layer) can increase 3 ~ 5 ℃; from sowing to flowering period can increase the accumulated temperature of about 250 ℃, is conducive to improving the province’s pre-low temperature cotton production conditions, early emergence 5-6 days, budding, flowering as early as 8 to 9 days, 20 days. The effective growth period is relatively extended by about half a month, up to more than 80% before the frost. In 1980, the province’s multi-point trial and large-scale production of a total of 550