| 摘要: |
| 通过1996～1997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（2cm）深度处上温变化规律，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。 |
| 关键词: 冬小麦,越冬,水热状况,旱冻,喷灌 |
| DOI： |
| 修订日期：1998-02-25 |
| 基金项目:国家自然科学基金!39770423 |
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| Study on Water and Heat Condition in Sprinkler Irrigated Overwintering Wheat Field and Preventive Approaches for Drought-freezing Injury |
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| Abstract: |
| Soil moisture fluctuation in the layer of 0-60 cm and soil temperature at depth of tiller node (2 cm) were investigated for overwintering winter wheat and the factors influencing soil freezing depth during overwintering period in 1996-1997.Based on field experiments, the principles to determine date and time of supplementing water by sprinkler irrigation in early spring were discussed, and an equation to estimate the quantity of supplementary water was suggested for the first time. |
| Key words: winter wheat,overwintering,water and heat condition,sprinkler irrigation,drought-freezing injury |
