摘要
黄土高原丘陵旱作农业区，大气降水是农业生产唯一可利用的水资源。农作物对降水资源的利用途径主要是通过其根系吸取降水人渗到土壤中的有效水分，因此土壤有效持水量的多少，直接影响农作物的生长发育。该文通过对降水转化到土壤有效持水之间各个环节的分析计算，得出了以安塞为代表的陕北黄土丘陵区降水在坡面的收存率，同时提出了提高降水资源利用率的途径。
Rainfall is the only one water resource can be used for crop in the region of dryland farming in loess plateau region. The crop use the resource of rainfall mainly by ways ofabsorbing the effective moisture through root system, which the rainfall permeated in soil.So the amolunt of effecfive soil water related to the growth of crop. According to the analysisand calculation to the every link which rainfall turn to effective soil water, the rate of receiptand keeping of rainfall on slope surface in loess hilly region which respected by Ausal countywas obtained, and raised the ways to raise the utilization rate of rainfall.
出处
《水土保持通报》
CSCD
北大核心
1998年第S1期19-23,27,共6页
Bulletin of Soil and Water Conservation
基金
中国科学院"西部之光"和安塞试区"九五"国家攻关项目
关键词
黄土丘陵区
降水资源
有效储水量
收存率
loess hilly region
ralnfall resource
effective soil water
the rate of receipt and keeping
