【摘要】 旱地棉田全程全覆盖栽培方法，以蕾期全覆盖产量最高，每公顷皮棉产量为９４８ｋｇ，较单一地膜覆盖增产３６．３４％。增产的主要原因是铃重提高０．３１ｇ；棉株发育中期地温降低，土壤水分提高。秋、春季全覆盖因棉株生育前期地温过低，而使生育进程推迟，故而减产。更多还原

【Abstract】 Among methods of whole journey and whole mulch cultivation on rain-fed cotton field, Yield of whole mulch on square time was the highest. Lint cotton yield was 948. 00kg/hm2, Yield was increased by 36. 34% than that in single film mulch field. The main reason of higher yield were increase of weight of boil,drop of soil temperature on cotton growth middle time and increase of soil water. The whole mulch in autumn and spring reduced yield which caused by lower soil temperature in earlier time and postponement of cotton growth process.更多还原