摘要
根据１９９２至１９９４连续三年的春玉米农田土壤水分动态、水分平衡试验，研究了陕西省合阳县旱地春玉米田水分动态规律、春玉米需水规律、耗水规律及水分盈亏状况。结果表明，春玉米需水量为４４１．４ｍｍ，实际耗水量为３０５．１ｍｍ。三年平均水分满足率６９．１％。
Based on soil moisture dynamic and balance tests in the farmland withspring maize from the years of 1992～1994,three years in succession,this paper dealswith soil moisture dynamic law in rainfed farmland with spring maize,water requirementlaw and water consumption law by spring maize,and excessive and deficit conditions ofsoil moisture in Heyang County,Shaanxi Province.The results showed that water re-quirement by spring maize was 441.4mm,the actual water consumption by spring maizewas 305.1mm,the average moisture requirement rate for 3 years was 69.1%.
出处
《干旱地区农业研究》
CSCD
北大核心
1996年第3期31-35,41,共6页
Agricultural Research in the Arid Areas
关键词
土壤水分平衡
春玉米
需水量
耗水量
soil moisture in farmland spring maize water requirement waterconsumption
