玛纳斯河流域棉田土壤有机碳平衡分析  

Analysis of the Balance of Soil Organic Carbon of the Cotton Field in the Manas River Valley

作　　者：柳红东[1] 张磊[2] 张凤华[1] 

机构地区：[1]新疆生产建设兵团绿洲生态农业重点实验室石河子大学,新疆石河子832003 [2]石河子大学,新疆石河子832003

出　　处：《平顶山学院学报》2006年第5期61-62,67,共3页Journal of Pingdingshan University

基　　金：国家重大基础研究前期研究专项项目(2003CCA02300);教育部春晖计划项目(Z2004-2-65044)

摘　　要：基于土壤有机碳长期定位监测的动态变化,阐述了玛河流域棉田土壤有机碳的平衡状况,20世纪90年代以前,培肥方式单一,棉田土壤有机碳积累呈下降趋势,土壤有机碳亏缺;20世纪90年代中期以后,随着秸秆还田面积的不断扩大,棉田土壤有机碳呈盈余状态.秸秆还田比率的多少,是决定玛纳斯河流域棉田土壤有机碳亏缺与盈余的决定性因素.Through the analysis of the dynamic change of soil organic carbon through a long- term fixed monitering, this paper sets forth the balance status of the soil organic carbon of the cotton fields in the Manas river valley. The soil organic carbon of the cotton fields descended before 1990＇s because of the simplistic fertilization method. With the constant expansion of the area of stalks returning to the fields after mid 90＇s, the soil organic carbon of the cotton fields has become abundant. Therefore, the rate of stalks refurning to the fields deceides the content of organic carbons.

关 键 词：有机碳 平衡 秸秆还田 玛纳斯河流域 

分 类 号：S151.95[农业科学—土壤学]