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Responses of Saline Soil Properties and Cotton Growth to Different Organic Amendments

查看全文 作　　者：WU [1,2]Yupeng;LI [2,3]Yufei;ZHANG [2,4]Yi;BI [2]Yanmeng;SUN [2]Zhenjun 高影响力作者 机构地区：[1]College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070( China);[2]College of Resources and Environmental Sciences, China Agricultural University, Beijing 100194( China);[3]Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097( China);[4]School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518000( China)高影响力机构 出　　处：《Pedosphere》索引2018年第28卷第3期,共9页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (No. 41371305);the National Key Research and Development Program of China (No. 2017YFD0202000) 摘　　要：Application of organic waste to saline alkaline soils is considered to be a good practice for soil remediation. The effects of applying different organic amendments(e.g., cattle dung, vermicompost, biofertilizer) and earthworm inoculations(Eisenia fetida) on saline soils and cotton growth were investigated during 1 year of cotton cultivation. Compared to the control(applied with inorganic NPK fertilizer), applying organic amendments improved soil physicochemical properties. Biofertilizer application improved available nutrient content, reduced short-term soil electrical conductivity, and produced the highest cotton yield, whereas cattle dung and vermicompost applications resulted in higher soil organic matter content. Application of organic amendments significantly increased soil microbial biomass carbon during the flowering period, which sharply declined at harvest. This was especially true for the biofertilizer treatment,which also exhibited lower nematode abundance compared with the other organic materials. Earthworm inoculation following cattle dung application failed to significantly change soil physicochemical properties when compared to the treatments without earthworm inoculation. Results suggest that biofertilizer application to saline soil would improve soil nutrient status in the short-term, whereas cattle dung application would improve soil organic matter content and increase soil organism abundance to a greater extent. However,different strategies might be required for long-term saline soil remediation. 关 键 词：土壤性质 棉花生长 修正案 器官 土壤物理化学 盐 土壤有机物 生物资源
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