文献类型： 外文期刊

作者： Liu Yi-Ren ¹ ; Li Xiang ¹ ; Shen Qi-Rong ¹ ; Xu Yang-Chun ¹ ;

作者机构： 1.Nanjing Agr Univ, Jiangsu Prov Key Lab Solid Organ Waste Utilizat, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Soil Fertilizer & Resource Environm, Nanchang 330200, Peoples R China

关键词： distribution;mean weight diameter;stability;total carbon;total nitrogen

期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）

ISSN： 1002-0160

年卷期： 2013 年 23 卷 1 期

页码：

收录情况： SCI

摘要： The activities of invertase, protease, urease, acid phosphomonoesterase, dehydrogenase, and catalase in different fractions of water-stable aggregates (WSA) were examined in long-term (26 years) fertilised soils. The long-term application of organic manure (OM) with chemical fertiliser (CF) significantly increased macroaggregate and decreased microaggregate percentages, enhanced the mean weight diameter, and significantly increased soil total carbon (TO) and total nitrogen (TN) contents of WSA in different size fractions. Combined fertilisation with OM and CF also increased invertase, protease, urease, acid phosphomonoesterase, dehydrogenase, and catalase activities of WSA in different size fractions. Enzyme activities were higher in macroaggregates than in microaggregates. The distribution of enzyme activities generally followed the distribution of TO and TN in WSA. The geometric mean of the enzyme activities in different WSA of OM-treated soils was significantly higher than that in soils treated with 100% CF or no fertiliser. The results indicated that the long-term combined application of OM with CF increased the aggregate stability and enzyme activity of different WSA sizes, and consequently, improved soil physical structure and increased soil microbial activity.