文献类型： 外文期刊

作者： Guo, Z. C. ¹ ; Zhang, Z. B. ¹ ; Zhou, H. ¹ ; Rahman, M. T. ¹ ; Wang, D. Z. ³ ; Guo, X. S. ³ ; Li, L. J. ³ ; Peng, X. H. ¹ ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100081, Peoples R China

3.Anhui Acad Agr Sci, Inst Soil & Fertilizer Res, Hefei 230031, Anhui, Peoples R China

关键词： Long-term fertilization; Soil structure; Aggregate stability; Organic manure; Soil organic carbon

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：5.374； 五年影响因子：6.368 ）

ISSN： 0167-1987

年卷期： 2018 年 180 卷

页码：

收录情况： SCI

摘要： To improve soil aggregation through proper fertilization is very important for enhancing soil quality and crop productivity. However, the response of soil aggregation varies with the fertilization practices. The objective of this study was to determine the effects of long-term application of inorganic fertilizer, straw and manure on water-stable aggregate distribution (> 2 mm, 0.25-2.0 mm, 0.053-0.25 mm, and < 0.053 mm), soil organic carbon (SOC), glomalin-related soil proteins (GRSP) and microbial biomass carbon (MBC) as the major biological binding agents in a Vertisol. The fertilization experiment established in 1982 is composed of six treatments as follows: no fertilization (Control), balanced inorganic fertilizer (NPK), low and high amount of straw plus inorganic fertilizer (NPKLS and NPKHS), and animal manure (both pig and cattle) plus inorganic fertilizer (NPKPM and NPKCM). Long-term straw and manure fertilization significantly increased SOC, GRSP and MBC (P < 0.05), while the application of the two animal manures also increased dispersing agents like exchangeable Na+. Consequently, the straw incorporation promoted the formation of > 2 mm macroaggregates significantly (P < 0.05) but the two animal manures did not (P > 0.05). The SOC, GRSP and MBC played an important role in the formation and stabilization of 0.25-2.0 mm aggregates. Our results indicate that animal manure may degrade soil structure due to the high salt content but straw incorporation is a judicious practice for sustainable agriculture in the Vertisol.