摘要
以低丘红壤黄筋泥为材料 ,在测定其基本理化性质和水分物理特性的基础上 ,对不同土壤的持水特性、释水特征及水分传导性能作了研究 ,结果表明 :水田和旱地红壤的持水量及非饱和导水率随土壤吸力的增加而快速下降 ,持水能力差 ,而下层土壤的持水能力和供水能力要比表土弱 ,这些性质均影响作物对土壤水分的吸收利用 。
This experiment was carried out on quartnary hilly red clayey soil. By measurement of soil water physical characters and principal soil physical chemical properties, soil water holding capacity, soil water release characters and soil water conductivity were analyzed. The results showed that with increase in soil suction, soil water holding capacity and unsaturated soil water conductivity of paddy soil and upland soil decreased rapidly. Soil water holding capacity and soil water supplying capacity of lower soil layers were low compared to surface soil. These factors significantly influenced soil water utilization by crop and substantially contributed to the occurrence of crop drought in hilly red soil.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2002年第1期42-46,共5页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
浙江省自然科学基金资助项目 ( 4 94 0 2 6)
关键词
红壤
持水性
供水性
作物
干旱
易旱
red soil
water retention character
soil water supply character
crop drought
