土壤-植物连续系统肥水效应的初步探讨  

A Preliminary Study on the Effect of Water and Fertilizer on Soilplant Continuum

作　　者：梁圈社[1] 刘思春[1] 朱建楚[1] 张一平[1] 

机构地区：[1]西北农业大学资源与环境科学系

出　　处：《西北农业大学学报》1997年第6期101-104,共4页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

摘　　要：田间试验的昼夜定时观测发现，不同肥力水平对土壤－植物连续系统水势有明显影响。在一定土壤含水量（２００ｇ／ｋｇ左右）下，随着土壤肥力提高，土壤水势有明显降低的趋势；小麦叶片细胞渗透势降低，小麦叶水势和叶片细胞的持水都有所提高。随着气温的升高，土壤－植物体系水势梯度（ψｓ－ｐ）呈增大趋势。Through continuous observation in field experiments,it was discovered that,with certain soil water content (200 g/kg or so),soil water potential and Osmosis potentials of wheat leaves decreased greatly,and water remained in leaf cells increased somewhat with soil fertility increment,and the water potential gradient in soilplant continuum had a tendency to increase with temperature rise.

关 键 词：土壤肥力 植物肥水效应 水势 以肥调水 

分 类 号：S158.3[农业科学—土壤学]