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本文以田间试验为基础，应用农田水量平衡理论和棉花对不同水分亏缺的反应，建立了一个棉花不同灌溉制度的评价模型，文中用ＦＡＯ－４６提供的Ｐｅｎｍａｎ－Ｍｏｎｔｅｉｔｈ方法计算了棉花生育期间逐日参考作物蒸散量，利用Ｉｓａｒｅｇ模型［５］计算了棉田逐日实际蒸散量。研究结果表明，利用农田水量平衡模型可对棉花灌溉进行有效管理。通过对几种灌溉方案的评价，定量化地分析了不同灌溉制度对棉花产量的影响程度和水分胁迫出现的时间；明确了在黄淮海平原棉田灌溉重点在棉花生育前期，即苗期，盛蕾－初花期；给出了该地区棉花各生育时期的需水量和每日的平均耗水强度
Based on field experiments, this paper established an evaluation model of different irrigation systems based on the theory of farmland water balance and the response of cotton to different water deficits. The Penman-Monteith method provided by FAO-46 was used to calculate the daily, With reference to crop evapotranspiration, the daily evapotranspiration of cotton field was calculated using Isareg model [5]. The results show that cotton irrigation can be effectively managed using the farmland water balance model. Through the evaluation of several irrigation schemes, the influence degree of different irrigation systems on cotton yield and the emergence time of water stress were analyzed quantitatively. The key points of cotton irrigation in Huang-Huai-Hai Plain during the early stage of cotton growth, ie seedling stage, Shenglei - flowering stage; given the region during the cotton growing needs of water and the average daily water consumption intensity