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运用误差分析方法研究了水平梯田与平作耕地冬小麦的水分供应状况的差异，讨论了水平梯田蓄水率和作物需水量的变化对水分状况的影响。认为主要是作物需水量的增大恶化了梯田水分供应状况。计算了西北黄土高原各地不同坡度水平梯田冬小麦的水分供应修正系数。
The error analysis method was used to study the difference of water supply status between winter terraces and horizontal terraces. The effects of horizontal terraced water storage and crop water requirement on water status were discussed. It is considered that the increase of water requirement of crops mainly aggravates the supply of water in terraced fields. The water supply correction coefficients of winter wheat with different gradient levels in terraced fields of Northwest Loess Plateau were calculated.