| 定位施用菌渣对稻田土壤团聚体中碳氮含量的影响 |
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| 引用本文： | 栗方亮,张 青,王煌平,王利民,王秋营,罗 涛.定位施用菌渣对稻田土壤团聚体中碳氮含量的影响[J].土壤,2017,49(1):70-76. |
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| 作者姓名： | 栗方亮 张 青 王煌平 王利民 王秋营 罗 涛 |
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| 作者单位： | 1. 福建省农业科学院土壤肥料研究所,福州 350013;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京 210008;2. 福建省农业科学院土壤肥料研究所,福州,350013;3. 福建省农业科学院土壤肥料研究所,福州 350013;福建农林大学资源与环境学院,福州 350002 |
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| 基金项目： | 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)开放基金(Y412201437)、福建省属公益类基本科研专项(2015R1022-8)和“十二五”国家科技支撑计划(2012BAD14B15)资助。* 通信作者：(luotaofjfz@188.com) |
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| 摘 要： | 研究定位施用菌渣对稻田土壤团聚体中碳、氮含量的影响,对菌渣的合理利用和农业的可持续发展具有一定的意义,同时可为揭示施用菌渣对稻田土壤肥力形成及演变的影响提供理论依据。本研究通过采集不同菌渣用量处理土壤,分析了稻田施用菌渣下土壤总有机碳和全氮及各粒级团聚体中碳、氮含量的变化,得出了各级团聚体对土壤有机碳和全氮的贡献率。结果表明:施用菌渣各处理土壤总有机碳含量较对照提高4.07%~15.71%(P0.05),其中,中量和高量菌渣处理土壤总有机碳含量分别为13.27 g/kg和12.81 g/kg。施用菌渣各处理土壤全氮含量较对照提高1.75%~8.61%(P0.05),其中,中量和高量菌渣处理土壤全氮含量分别为1.47 g/kg和1.43 g/kg。总体而言,各处理中1.0 mm的各级土壤团聚体中碳、氮含量显著高于其他粒径团聚体,碳、氮主要分布在较大粒级团聚体上。不同处理各粒级团聚体分离的碳、氮回收率分别为77.05%~87.36%、77.66%~89.68%,说明获得的各粒级团聚体有机碳和全氮含量分布的结果是相对可靠的。由此,菌渣的施用提高了稻田土壤水稳性大团聚体中碳、氮的含量,其是改善土壤团粒结构,提高稻田土壤生产力的有效措施。
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| 关 键 词： | 菌渣 土壤团聚体 稻田 有机碳 全氮 |
| 收稿时间： | 3/3/2016 12:00:00 AM |
| 修稿时间： | 6/2/2016 12:00:00 AM |
Effects of Positioning Application of Mushroom Residues on Carbon and Nitrogen Contents in Soil Aggregates of Paddy Field |
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| LI Fangliang,ZHANG Qing,WANG Huangping,Wang Limin,WANG Qiuying and LUO Tao.Effects of Positioning Application of Mushroom Residues on Carbon and Nitrogen Contents in Soil Aggregates of Paddy Field[J].Soils,2017,49(1):70-76. |
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| Authors: | LI Fangliang ZHANG Qing WANG Huangping Wang Limin WANG Qiuying and LUO Tao |
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| Institution: | State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences |
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| Abstract: | Effects of the positioning application of mushroom residues on organic carbon and nitrogen in soil aggregates of paddy field were studied, it had a certain significance on the reasonable utilization of the mushroom residues and the sustainable development of agriculture. And it provided a theoretical basis for revealing the influence mechanism of the application of mushroom residues on the formation and evolution of soil fertility in paddy field. The soil organic carbon and total nitrogen of soil and soil aggregates of different grain sizes were studied by collecting the soil of using different dosage mushroom residues, and the contribution rate of soil organic carbon and total nitrogen were analyzed. The study showed that the content of organic carbon in soil was 4.07 %~15.71% higher than that of the control respectively. The contents of organic carbon in the treatment of medium and high mushroom residues were 13.27 g/kg and 12.81 g/kg (p>0.05), respectively. The total nitrogen content of treatment of using mushroom residues was 1.75%~8.61% higher than that of the control (p>0.05), and the content of total nitrogen in the treatments of medium and high mushroom residues were 1.47 g/kg and 1.43 g/kg (p>0.05), respectively. In general, the organic carbon and nitrogen content of >1 mm soil aggregates were significantly higher than those of other grain size aggregates. It was showed that organic carbon and nitrogen were mainly distributed in the larger grain size aggregates. The recovery rates of organic carbon and total nitrogen in grain size aggregates were 77.05%~87.36% and 77.66%~89.68%, respectively. The results were relatively reliable. These results indicated that the application of mushroom residue increased the content of organic carbon and nitrogen of water stable aggregates, improved soil aggregate structure, and it was effective measures to improve the productivity of paddy soil. |
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| Keywords: | Mushroom residue Soil aggregate Paddy field Organic carbon Total nitrogen |
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