晋西黄土区核桃花生复合土壤水分效应研究  

Effects of Soil Moisture in Walnut—peanut Intercropping System in the Loess Region of West Shanxi Province

作　　者：云雷[1] 毕华兴[1] 任怡[1] 马雯静[1] 田晓玲[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室山西吉县森林生态系统国家野外科学观测研究站,北京100083

出　　处：《水土保持通报》2009年第5期61-64,共4页Bulletin of Soil and Water Conservation

基　　金：国家"十一五"科技支撑项目"黄土区农林复合系统可持续经营技术研究"(2006BAD03A0503)

摘　　要：以2008年晋西黄土区典型核桃花生复合系统为研究对象,利用土钻取样烘干称重法,取土深度为0—100cm,对复合系统土壤水分效应进行了研究。研究结果表明,(1)核桃花生复合系统土壤含水量的季节变化极显著;(2)核桃花生复合系统在垂直方向上,土壤水分随着土壤深度的增加而增加,在0—40cm土层内变化较为激烈;在水平方向上,距果树带越近,土壤水分含量越少,但随着带距的增加水分增加直至趋于稳定,变化曲线呈抛物线状分布;(3)与花生单作对比得出,复合系统花生土壤水分效应为正值,说明虽然核桃树和农作物根系的生态位有重叠,会产生对土壤水分的竞争利用,但竞争影响并不明显。By taking the typical walnut—peanut intercropping system in the loess region of West Shanxi Province as the study object,the effects of soil moisture in different layers of soil profile(0—100 cm)were studied using the traditional weighing method in 2008.Results showed that(1)the seasonal variation of soil moisture was very significant in the intercropping system.(2)Soil moisture content increased with the increased depth of soil in vertical direction and the variance of soil moisture in 0—40 cm soil layer w...

关 键 词：复合系统 土壤水分 时空分布 水分效应 

分 类 号：S15[农业科学—土壤学]