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首页> 外文期刊>Journal of soil & sediments >Distribution of carbon and nitrogen in water-stable aggregates and soil stability under long-term manure application in solonetzic soils of the Songnen plain, northeast China
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Distribution of carbon and nitrogen in water-stable aggregates and soil stability under long-term manure application in solonetzic soils of the Songnen plain, northeast China

机译：东北松嫩平原土壤长期施肥后水稳性团聚体中碳氮的分布及土壤稳定性

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摘要

Purpose Excessive exchangeable sodium and high pH significantly decrease soil structural stability and permeability. Long-term application of cattle manure is an important management practice that can affect water-stable aggregates (WSAs), as well as aggregate stability and distribution of soil organic carbon (SOC) and total nitrogen (TN) in solonetzic soils. Material and methods Experiments were carried out in a randomized complete block design comprising five treatments according to the cattle manure application history: com (Zea mays) with manure applied for 1, 5,12, and 17 years were used as the experimental treatments and com without manure application was used as a control. Soil properties, including WSAs, mean weight diameter (MWD), and SOC and TN concentrations in bulk soils and WSAs, were measured across all treatments. The relationships among the measured soil attributes were determined using stepwise regression analysis. Results and discussion Results indicated that micro-aggregates mainly accumulated in soils without manure application, while manure application significantly increased macro-aggregates formation. MWD was highest when manure was applied to the soil for 1 year, decreased after 5 years, and increased again after 12 years. SOC and TN concentrations in bulk soils and WSAs increased with the number of years of manure application, with the highest concentrations observed for 17 years in bulk soils. Stepwise regression analysis showed that WSAs 2-5 mm, SOC in WSAs 0.25-0.5 mm, and TN in WSAs 0.1-0.25 mm were dominant independent variables affecting aggregate stability, and that SOC in WSAs 0.25-0.5 mm and TN in WSAs ＜0.1 mm were dominant independent variables affecting SOC and TN concentrations in bulk soils, respectively. Conclusions Long-term application of manure to a solonetz significantly increased macro-aggregates and aggregate stability as well as SOC and TN in bulk soils and all aggregate sizes. These results are likely related to binding agent production as well as C and N accumulation from manure application.
机译：目的过量交换的钠和高pH值会显着降低土壤的结构稳定性和渗透性。长期施用牛粪肥是一种重要的管理实践，可能会影响水稳性骨料（WSA）以及骨料土壤中骨料的稳定性以及土壤有机碳（SOC）和总氮（TN）的分布。材料和方法根据牛粪的施用历史，在随机完整区组设计中进行了五种处理方法的实验：com（Zea mays）施用了1,5,12和17年的粪便作为实验处理方法，不施肥用作对照。在所有处理中都测量了土壤特性，包括WSA，平均重均粒径（MWD）以及散装土壤和WSA中的SOC和TN浓度。使用逐步回归分析确定测得的土壤属性之间的关系。结果与讨论结果表明，微团聚体主要积累在不施用肥料的土壤中，而施用肥料显着增加了大型团聚体的形成。当施肥于土壤1年时，MWD最高，5年后降低，12年后再次升高。随着施肥年限的增加，大块土壤和WSA中的SOC和TN浓度增加，在大块土壤中观察到的最高浓度为17年。逐步回归分析表明，WSA 2-5 mm，WSA 0.25-0.5 mm的SOC和WSA 0.1-0.25 mm的TN是影响骨料稳定性的主要自变量，WSA 0.25-0.5 mm的SOC和WSAs的TN ＜0.1 mm是分别影响散装土壤中SOC和TN浓度的主要独立变量。结论长期将肥料施用到solonetz上，可显着增加散装土壤和所有集料尺寸的大型集料和集料的稳定性以及SOC和TN。这些结果可能与结合剂的产生以及粪肥施用过程中碳和氮的积累有关。

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  • 来源
    《Journal of soil & sediments》 |2014年第6期|1041-1049|共9页
  • 作者

    Qingfeng Meng; Yuting Sun; Jing Zhao; Lianren Zhou; Xianfa Ma; Meng Zhou; Wei Gao; Guangcheng Wang;

  • 作者单位

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    School of Resources and Environment, Northeast Agricultural University, No.59 Mucai Street, Harbin 150030, Heilongjiang, People's Republic of China;

    Center of Zhaozhou County on Popularization of Agricultural Technology, Zhaozhou 166400, Heilongjiang, People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    Carbon and nitrogen distribution; Cattle manure; Long-term experimentation; Solonetz; Water-stable aggregates;

    机译：碳氮分布牛粪长期实验;Solonetz;耐水骨料;

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