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Position: Home > Articles > Path analysis on the factors affectting salt accumulation of topsoil in a depression of Hai River Plain Chinese Journal of Eco-Agriculture 2004,12 (2)

海河低平原盐渍涝洼区表层土壤积盐影响因素通径分析

作  者:
毛任钊;张妙仙;张玉铭
单  位:
中国科学院石家庄农业现代化研究所
关键词:
表土;盐渍度;通径分析;涝洼地
摘  要:
采用通径分析方法研究海河低平原盐渍涝洼区表层土壤积盐因素的主次关系结果表明 ,地下水埋深2~ 3m、表层土壤全盐量≤ 5 0g/kg、地表高差≤ 6 6cm地段 ,表层土壤盐渍度主要受心土层盐分状况和微地形因素支配 ,而 6个间接作用中亚表土层全盐量通过心土层全盐量对表层土壤盐分累积的作用最大。
译  名:
Path analysis on the factors affectting salt accumulation of topsoil in a depression of Hai River Plain
作  者:
MAO Ren-Zhao,ZHANG Miao-Xian,ZHANG Yu-Ming(Shijiazhuang Institute of Agricultural Mordernization,Chinese Academy of Sciences,Shijiazhuang 050021)
关键词:
Topsoil,Salinity,Path analysis,Depression and waterlogging land
摘  要:
In the depression and waterlogging land of Hai River Plain where the groundwater depth to the surface is about 2~3m,the salt content in topsoil is less or equal to 50g/kg,and the relative height of landform is less or equal to 66cm,the primary and secondary relationships among some factors are considered by using the Path Analysis method. The results show that the topsoil salinity mainly depends on the salinity of bottom soil and micro-landform,whereas the indirect effect of subsoil salinity on topsoil salinity through the bottom soil is the biggest one among all of six effects.

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