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本文通过1996—1997年小麦越冬试验，研究了北京地区喷灌麦田越冬期间0～60cm土壤水分及小麦分蘖节深度处（2cm）土温变化规律，并分析了影响土壤冻深的因素。本文在田间试验的基础上，总结了喷灌补水时期的确定原则，并首次提出补水量的估算公式。试验证明，早春适时适量喷灌补水是防御旱冻的有效途径。
In this paper, through the winter overwintering experiment in 1996-1997, the law of soil temperature at 0-60cm soil depth and wheat tiller node depth (2cm) during sprinkler irrigation in Beijing was studied, and the factors affecting soil freezing depth were analyzed. Based on the field experiment, this paper summarizes the principle of determining the period of sprinkler irrigation and replenishing water and proposes the formula for calculating the amount of water replenishment for the first time. Experiments show that proper amount of spray in early spring water replenishment is an effective way to prevent drought.