摘要
土壤在不同的灌溉水量下水分运移规律对于制定合适的灌溉定额有着重要作用。为了研究半干旱区土壤水分时空变化规律,针对三种不同的灌溉定额,采用TRIME-TDR土壤水分测试仪对渭北平原的泾惠渠灌区土壤水分进行不同时刻的测定,通过对同一时刻不同灌溉量对土壤水分的影响以及同一灌溉量对土壤水分随时间变化的影响研究,得出了灌区土壤水分下渗的基本规律以及灌区的最佳灌溉定额为2.68~4.02 m3.hm-2。
Soil moisture content movement regulation is very important for establishing proper irrigation quota.In order to study the regulation of time-domain variation of soil moisture in the semi-arid areas,the testing of soil moisture content on different time in Jinghuiqu irrigation area was conducted introduced TRIME-TDR Soil Moisture Testing Equipment for three different irrigation quotas.The basic moisture content infiltration regulation and the best irrigation quota（2.68～4.02 m3·hm-2） were worked out through the study on moisture content variation caused by the same irrigation volume as time went by and moisture content caused by different irrigation volume at the same time.
出处
《黑龙江农业科学》
2009年第5期53-56,共4页
Heilongjiang Agricultural Sciences
基金
教育部
国家外专局高等学校学科创新引智计划项目(B08039)
