摘要
本文利用人工牧草地土壤水分试验测定资料,分析研究了草地土壤水分的周年变化规律,得出草地土壤水分周年变化可划分为春季失墒期、夏季增失墒交替期、伏秋增墒期;土壤水分动态曲线波动主要受降水补给量和牧草耗水量的影响而变化,雨季降水对旱作草地土壤水分的补给起着重要作用。
In this paper, the experimental data of soil water in artificial swards are used to discuss the annual variation regularities of soil water in sward. The dynamics of soil water in sward is mainly affected by precipitation and the water consumption of grass. Precipitation in the raing season plays on important role in the supplement of soil water in arid sward.
出处
《土壤学报》
CAS
CSCD
北大核心
1992年第2期175-182,共8页
Acta Pedologica Sinica
基金
国家气象局农业气象基金
关键词
土壤水分
人工草地
耗水量
Artificial sward, Soil water, Water consumption
