| 秸秆改良材料对沙质土壤钾素抗淋溶的效应 |
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| 引用本文： | 宋丽,满洪喆,王定勇. 秸秆改良材料对沙质土壤钾素抗淋溶的效应[J]. 西南大学学报(自然科学版), 2011, 33(7) |
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| 作者姓名： | 宋丽 满洪喆 王定勇 |
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| 作者单位： | 西南大学三峡库区生态环境教育部重点实验室资源环境学院;三峡库区农业面源污染控制工程技术研究中心;重庆市农业资源与环境研究重点实验室; |
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| 基金项目： | 公益性行业(农业)科研专项(201003014,201003016); 国家科技支撑计划课题(2007BAD39B02); 西南大学生态学重点学科“211工程”建设项目 |
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| 摘 要： | 通过淋溶试验,研究了沙质土壤在加入不同施加量和配比的秸秆改良材料后钾素的淋溶状况.结果表明:秸秆改良材料对沙质土壤钾素的淋溶有明显的抑制作用.在一定范围内,施加量大和配方中聚丙烯酰胺(PAM)含量高的处理效果最好,添加秸秆∶膨润土∶PAM为900∶100∶30的改良材料(处理T10-3)的土壤钾素累积淋溶量较CK减少了48%.此外,施用秸秆改良材料能有效抑制沙质土壤钾素的垂直迁移,处理T10-3上层土壤中速效钾的含量较CK提高了102%,下层则降低了58%,说明沙质土壤中施用秸秆改良材料具有抗钾素淋失的效应.
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| 关 键 词： | 秸秆改良材料 沙质土壤 钾 淋溶 |
Effect of Straw-Modified Material on Leaching of Potassium in the Sandy Soil |
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| SONG Li,MAN Hong-zhe,WANG Ding-yong,, .Key Laboratory of Eco-environments in Three Gorges Region,Southwest University,School of Resources , Environment,Chongqing ,China,.Chongqing Engineering Research Cemter for Agricultural Non-Point Source Pollution Control in the Three Gorges Reservoir Area,Chongqing ,.Chongqing Key Laboratory of Agricultural Resources , Environment. Effect of Straw-Modified Material on Leaching of Potassium in the Sandy Soil[J]. Journal of southwest university (Natural science edition), 2011, 33(7) |
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| Authors: | SONG Li MAN Hong-zhe WANG Ding-yong .Key Laboratory of Eco-environments in Three Gorges Region Southwest University School of Resources Environment Chongqing China .Chongqing Engineering Research Cemter for Agricultural Non-Point Source Pollution Control in the Three Gorges Reservoir Area Chongqing .Chongqing Key Laboratory of Agricultural Resources Environment |
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| Affiliation: | SONG Li1,MAN Hong-zhe1,WANG Ding-yong1,2,3 1.Key Laboratory of Eco-environments in Three Gorges Region(Ministry of Education),Southwest University,School of Resources and Environment,Chongqing 400715,China,2.Chongqing Engineering Research Cemter for Agricultural Non-Point Source Pollution Control in the Three Gorges Reservoir Area,Chongqing 400716,3.Chongqing Key Laboratory of Agricultural Resources and Environment |
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| Abstract: | |
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| Keywords: | straw-modified material sandy soil potassium leaching |
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