采用人工模拟降雨器对湖北省主要土类侵蚀性的研究  

A STUDY OF SOIL ERODIBILITY BY USE RAINFALL SIMULATOR ON THE MAJOR SOIL TYPES IN HUBEI PROVINCE

作　　者：谢如林[1] 杨补勤[1] 

机构地区：[1]华中农业大学土化系

出　　处：《华中农业大学学报》1991年第4期367-373,共7页Journal of Huazhong Agricultural University

基　　金：高等学校博士点科学技术基金

摘　　要：应用仿制的人工模拟降雨器,测定了湖北省五种母质上发育的四个土壤类型的九个土样.测试结果表明,土壤相对侵蚀性K值与成土母质有明显的规律性.通过推导和多元线性回归分析得到K值的预测模型.K=2.0Kt.Bd(1—0.006WSA).它与实测的K值有极显著的相关性(r=0.9715).模型中没有包含土壤的化学性质因子,因土壤的化学性质是通过影响土壤的物理性质而影响土壤侵蚀性的.A Modified rainfall simulator was used in determination of soil erodibility.Nine soils in Hubei province which classfied into four soil groups and derived from five parentmaterials were tested.The results indicated that there was a good response within parent materialsrather than among soil groups.A soil erodibility predicting model was established after a series oftheoretical deduction and multiple regressive analysis,the equation as:=2.0 Kt·Bd·(1—0.006WSA).Where is predicting value(G/J)of K,Bd is soil bulk density,Kt is soilsuspension property and WSA is of 0.25mm water stable aggregates.the values are verysignificant with tested K(Υ=0.975).The Roles of chemical properties are difficult to assess,and may also reflect some interaction among actually other soil physical properties.

关 键 词：人工模拟 降雨器 土壤 侵蚀性 预测 

分 类 号：S157.1[农业科学—土壤学]