摘要
连续三年进行田间水分动态监测.结果表明,冬麦耗水量主要受生育期降水的影响;不同年份间对土壤水分的消耗量差别不大.对0～150cm土层水分的利用系数(WUC)为0.543～0.799,在中下部土层中有相当数量的水分是不能够被冬小麦利用的,其WUC降低到0.2以下.
The dynamics of soil moisture had been monitored for 3 consecutive years in combination with fertilization experiments with winter wheat in the clay Heilu soil area of eastern Gansu region.Evapotranspiration of the winter wheat was determined by rainfall quantity during growth period.However,The exhaustion of soil water did no vary significantly.The maximal of soil water used by the winter wheat was 54.3 to 79.9% of the available moisture capacity in the 0-10cm soil layer.
出处
《土壤通报》
CAS
CSCD
北大核心
2000年第1期17-20,共4页
Chinese Journal of Soil Science
关键词
粘性黑垆土
冬小麦
土壤水分
Heilu soil, Winter wheat, Soil moisture, Soil water availability
