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Effects of Long-Term Winter Planted Green Manure on Distribution and Storage of Organic Carbon and Nitrogen in Water-Stable Aggregates of Reddish Paddy Soil Under a Double-Rice Cropping System

文献类型： 外文期刊

作者： Yang Zeng-ping 2 ; Zheng Sheng-xian 1 ; Nie Jun 1 ; Liao Yu-lin 1 ; Xie Jian 1 ;

作者机构： 1.Hunan Acad Agr Sci, Soil & Fertilizer Inst Hunan Prov, Changsha 410125, Hunan, Peoples R China

2.Minist Agr, Sci Observing & Expt Stn Arable Land Conservat Hu, Changsha 410125, Hunan, Peoples R China

关键词： green manure;organic carbon;reddish paddy soil;total nitrogen;water-stable aggregates

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2014 年 13 卷 8 期

页码：

收录情况： SCI

摘要： In agricultural systems, maintenance of soil organic matter has long been recognized as a strategy to reduce soil degradation. Manure amendments and green manures are management practices that can increase some nutrient contents and improve soil aggregation. We investigated the effects of 28 yr of winter planted green manure on soil aggregate-size distribution and aggregate-associated carbon (C) and nitrogen (N). The study was a randomized completed block design with three replicates. The treatments included rice-rice-fallow, rice-rice-rape, rice-rice-Chinese milk vetch and rice-rice-ryegrass. The experiment was established in 1982 on a silty light clayey paddy soil derived from Quaternary red clay (classified as Fe-Accumuli-Stagnic Anthrosols) with continuous early and late rice. In 2009, soil samples were collected (0-15 cm depth) from the field treatment plots and separated into water-stable aggregates of different sizes (i.e., >5, 2-5, 1-2, 0.5-1, 0.25-0.5 and <0.25 mm) by wet sieving. The long-term winter planted green manure significantly increased total C and N, and the formation of the 2-5-mm water-stable aggregate fraction. Compared with rice-rice-rape, rice-rice-Chinese milk vetch and rice-rice-ryegrass, the rice-rice-fallow significantly reduced 2-5-mm water-stable aggregates, with a significant redistribution of aggregates into micro-aggregates. Long-term winter planted green manure obviously improved C/N ratio and macro-aggregate-associated C and N. The highest contribution to soil fertility was from macro-aggregates of 2-5 mm in most cases.

  • 相关文献

[1]Effects of Long-Term Winter Planted Green Manure on Physical Properties of Reddish Paddy Soil Under a Double-Rice Cropping System. Zheng Sheng-xian,Nie Jun,Liao Yu-lin,Xie Jian,Xu Ming-gang,Gao Ju-sheng,Yang Zeng-ping. 2012

[2]Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil. Zheng Sheng-xian,Nie Jun,Xie Jian,LU Yan-hong,Qin Xiao-bo. 2013

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