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冬、春灌的棉田,一般都能满足棉花发芽、出苗和苗、蕾期发育的需水量。春旱年份,高密度棉田、早熟品种先显旱。地膜覆盖有明显的保墒提墒作用。花铃期棉田需水量最大,常年气候条件下,需补充灌水70～80立方/亩,这是增产的关键措施之一。地膜棉田、早熟品种需水高峰期明显提前。吐絮期棉田一般不需灌溉,但个别秋旱年份,初絮期灌溉对创高产有利。在春旱情况下,提倡蕾期蓄水灌溉,但要注意控制徒长。
Winter, spring irrigation of cotton fields, generally able to meet the cotton sprouting, emergence and seedlings, bud stage development of water demand. Spring drought years, high-density cotton fields, precocious varieties first drought. Mulch mulching has significant effect of soil moisture. Flower cotton boll water demand is the largest, perennial climatic conditions, need to add irrigation 70 ~ 80 cubic meters / mu, which is one of the key measures to increase production. Film cotton fields, early maturing varieties significantly ahead of the peak water demand. Cotton boll opening cotton fields generally do not need irrigation, but individual autumn years, the initial flooding irrigation on high yield is good. In the case of spring drought, advocate bud water storage irrigation, but should pay attention to control leggy.