摘要
旱作区的降水是土壤水库水分补给的主要源泉。土壤水分补给量与自然降水量依存关系密切。１０ｍｍ的降水量土壤渗透深度为７～９ｃｍ，降水渗入土壤中的水分为降水量的６２％～７６％。不同气候类型雨季给土壤补给量不同，平均为６３ｍｍ．补给率为２９％。
Rainfall water is the main source of soil moist ure reservoir com pensationin rainfed lands so that there is a close relationship between soil moisture compensationand rainfall water.Trie 10mm of presipitation can infiltrate into soil with a depth of 7～9cm,and an amount of moisture infiltrated into soil is only 62%～76%of rainfall water.Accordingly,there are different water compensations in rainy season under the differentclimate patterns,but the mean value can be 63mm,and the average compensation effi-ciency is 29%.
出处
《干旱地区农业研究》
CSCD
北大核心
1996年第3期5-9,共5页
Agricultural Research in the Arid Areas
基金
中国气象局<甘肃省旱作土壤水库的研究>项目
关键词
土壤水分
补给量
自然降水量
旱作区
甘肃
soil water moisture compensation natural rainfall water soil in-fltration depth rainfed agricultural area
