Amendment of Acid Soils with Crop Residues and Biochars

查看全文 作　　者：YUAN Jin-[1,2]Hua;XU Ren-[1,2]Kou;WANG [1]Ning;LI Jiu-[1]Yu

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008 (China);[2]Graduate University of Chinese Academy of Sciences, Beijing 100049 (China)

出　　处：《Pedosphere》索引2011年第21卷第3期,共7页

基　　金：Supported by the National Key Technology R&D Program of China (No.2009BADC6B02);the National Natural Science Foundation of China (No.40971135) 摘　　要：The liming potential of some crop residues and their biochars on an acid Ultisol was investigated using incubation experiments. Rice hulls showed greater liming potential than rice hull biochar, while soybean and pea straws had less liming potential than their biochars. Due to their higher alkalinity, biochars from legume materials increased soil pH much compared to biochars from non-legume materials. The alkalinity of biochars was a key factor aflecting their liming potential, and the greater alkalinity of biochars led to greater reductions in soil acidity. The incorporation of biochars decreased soil exchangeable acidity and increased soil exchangeable base cations and base saturation, thus improving soil fertility. 关键词：酸性土壤残留物作物修订植物材料土壤酸度盐基饱和度盐基阳离子

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Amendment of Acid Soils with Crop Residues and Biochars

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