Long-term fertiliser (organic and inorganic) input effects on soil microbiological characteristics in hydromorphic paddy soils in China
文献类型： 外文期刊
作者： Liu, Yiren 1 ; Hou, Hongqian 1 ; Ji, Jianhua 1 ; Lv, Zhenzhen 1 ; Liu, Xiumei 1 ; Liu, Guangrong 1 ; Li, Zuzhang 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Soil Fertilizer & Resource Environm, New Typed Fertilizer Lab, Nanlian Rd 602, Nanchang 330200, Jiangxi, Peoples R China
关键词： chemical fertiliser; fertilisation; manure; microbiology
期刊名称：SOIL RESEARCH （ 影响因子：1.987； 五年影响因子：2.47 ）
ISSN： 1838-675X
年卷期： 2019 年 57 卷 5 期
页码：
收录情况： SCI
摘要： This study investigated long-term fertilisation effects on soil microbiological characteristics of hydromorphic paddy soils. The study was conducted in 30-year-old experimental plots with various treatments involving chemical fertiliser (nitrogen, phosphorus, and potassium) alone or in combination with manure in relation to a control in a rice-rice-fallow system at the farm at Jiangxi Academy of Agricultural Science. The soil microbial biomass carbon (SMBC) and nitrogen (SMBN), microbial enzyme activity, and microbial community structure were analysed. Changes in levels of SMBC and SMBN in response to combinations of organic-inorganic fertilisers were significantly higher than for inorganic fertiliser treatment. Furthermore, activities of microbial enzymes (sucrase, urease, proteinase, acid phosphatase, and catalase) were significantly higher in combined than in inorganic fertiliser and control treatments. Additionally, the richness and evenness of soil bacteria were decreased by long-term fertilisation, especially inorganic, whereas the Shannon-Weiner and richness indexes of soil fungi were higher. Long-term fertilisation with high doses of combined organic-inorganic input significantly increased microbial biomass, enzyme activity, and fungal community diversity. However, the same input decreased bacterial community diversity. This study will be useful for improving fertilisation management in hydromorphic paddy soils.
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