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从平作耕地的水分供应订正函数入手，运用误差分析理论，研究了水平梯田与平作耕地的作物水分供应订正函数之差及其影响因素。指出，水平梯田水分状况的恶化包括蓄墒率的减小和作物需水量的增大两部分；水平梯田的水分满足度依次为马铃薯＞春谷子＞春小麦。
Beginning with the water supply correction function of the plain cropland, error analysis theory was used to study the difference and its influencing factors of the crop water supply correction function between the terraced rice fields and the plain cropland. It is pointed out that the deterioration of water condition in horizontal terraces includes the reduction of soil moisture content and the increase of crop water requirement. The water satisfaction of horizontal terraces is as follows: potato> spring millet> spring wheat.