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１９９４～１９９６年在商丘试验区对麦棉两熟棉田水分时空消长动态和整个生育期亏水量和灌水量进行了系统研究。结果表明，麦棉两熟棉田水分在空间上主要有三个层次变化，第一层０～４０ｃｍ为剧烈变化层，第二层４０～１００ｃｍ为较剧烈变化层，第三层１００～２００ｃｍ为稳定层。从时间上来看雨季来临之前的变化与降水有较大的关系，雨季期间基本没有变化；黄淮地区麦棉两熟移栽棉田整个生育期亏水１００～１２０ｍｍ，需灌水２～３次，灌水定额为６０～６８ｍｍ，灌溉定额１８０～２０４ｍｍ。
The spatial and temporal dynamics of water content in wheat and cotton fields and the amount of water deficit and irrigation during the whole growing period were systematically studied in Shangqiu experimental area from 1994 to 1996. The results showed that there were three main spatial variations of water content in wheat and cotton double cropping soil. The first layer 0 ~ 40cm was the dramatic change layer, the second layer 40 ~ 100cm was the more intense change layer, the third layer 100 ~ 200cm was the stable layer . From the time point of view before the advent of the rainy season, there is a great relationship between the change and precipitation. There is no change during the rainy season. The cotton and cotton transplanting cotton fields in the Huanghuai area lose 100-120mm during the whole growing period, and need to be irrigated for 2-3 times. Quota of 60 ~ 68mm, irrigation quotas 180 ~ 204mm.