摘要
以广西东兰县退耕还林地和荒山林地的7种立地类型土壤剖面的A、B层为研究对象,采用环刀法测定土壤容重,用重铬酸钾法-外加热法测定土壤有机质的含量,采用单因素方差分析方法分析A层和B层土壤有机质含量和土壤容重的差异性,结果表明,A层土壤有机质含量与土壤容重之间的关联紧密程度比B层的大,荒山林地的A层、B层分别比退耕林地的相应A层、B层的大。
Using chestnuts in A and B level of the soil profiles in 7 kind of site types of the forest land returned from the cultivated land and wasteland woodland in Donglan County as studying objects, the blade ring method was used to survey soil bulk density, the potassium dichromate-outside the heating method was used to survey soil organic matter content, the analysis of variance with single factor was used to analyze the differences of A and B level of soil organic matter content and soil bulk density, the analysis of Least-squares was used to estimate the regression equation of soil organic matter content and soil bulk density. The relations of regression equation of quadratic parabola was obtained in A level between soil organic matter content and soil bulk density. The relations of regression equation of three parabolic was obtained in B level between soil organic matter content and soil bulk density. The extent of A level between soil organic matter content and soil bulk density was deeper than that of the B level. The extent of A level and B level between soil organic matter content and soil bulk density in the wasteland woodland was deeper than that of A and B level of the forest land returned from the cultivated land.
出处
《湖北农业科学》
北大核心
2014年第1期59-63,共5页
Hubei Agricultural Sciences
基金
广西区林业厅资助"广西退耕还林工程建设效益监测"项目(AB180102)
关键词
土壤
有机质
土壤容重
soil
organic matter
soil bulk density
