棉花覆膜栽培是植棉史上的一项重大技术革命,增产增收效果十分显著,现已被棉农普遍采用。由于地膜的增温保墒作用改善了棉苗的生长环境条件,使地膜棉的生育进程提早,因而地膜棉与露地棉的生育特点和对环境条件的要求显著不同。覆盖地膜促进了棉花的生长发育,促使其提早现蕾、开花、结铃、吐絮,霜前花率也大大提高;但与此相对应的是,地膜棉前期长势旺、后期长势弱,根系浅,易倒伏, Cotton laminating cultivation is a major technological revolution in the history of cotton planting. The effect of increasing output and increasing income is very significant and has now been widely adopted by cotton farmers. Because of the effect of plastic film’s warming and soil moisture conservation, the growth conditions of cotton seedlings are improved and the growth process of cotton seedlings is earlier. Therefore, the characteristics of mulching cotton and open-field cotton are obviously different from the requirements of environmental conditions. Covering the plastic film to promote the growth and development of cotton, prompting it to early budding, flowering, boll opening, bolting floc, pre-frost rate also greatly increased; but corresponding to this is the prosperous flour mulberry early growth late weak, shallow root system , Easy to lodging,