Responses of soil micro-food web to long-term fertilization in a wheat-maize rotation system

doi:10.1016/j.apsoil.2015.09.008

	Responses of soil micro-food web to long-term fertilization in a wheat-maize rotation system
	Zhang, Zhiyong 1,2; Zhang, Xiaoke 1; Xu, Minggang 3; Zhang, Shuiqing 4; Huang, Shaomin 4; Liang, Wenju 1
刊名	APPLIED SOIL ECOLOGY
	2016-02-01
卷号	98 页码:56-64
关键词	Microbial Community Nematode Community Long-term Fertilization Metabolic Footprint Structural Equation Modeling Wheat-maize Rotation
ISSN号	0929-1393
DOI	10.1016/j.apsoil.2015.09.008
英文摘要	Soil microbes and nematodes are important components of soil biota that strongly affect agricultural productivity and sustainability. Currently, our knowledge on the response of soil biota to agricultural management is restricted. This study aimed to identify the relationship between microbial and nematode communities and explore the resource path that flows within the soil micro-food web under different fertilization practices in a winter-wheat/summer-maize rotation system. The experiment was a randomized complete block design with three replicates for each treatment that included unfertilized control; inorganic N, P and K fertilizer (NPK); NPK plus manure; and NPK plus maize straw. Soil samples were taken at a 0-20 cm depth when wheat and maize were harvested. The results showed that organic manure or maize straw combined with NPK fertilizers had positive effects on the soil microbial and nematode communities. For example, the incorporation of straw increased the fungal biomass. Longterm inorganic fertilization might restrain nematode biomass accumulation especially in fungivorous nematodes. The analysis of the metabolic footprints of nematodes suggested that the incorporation of straw could enhance the carbon resource flow into the soil food web by enhancing nematode biomass. Structural equation modeling analysis suggested that the bottom-up control from the microbial community to the nematode community was more obvious in the wheat season in comparison with the maize season. In addition, a relatively stronger predation relationship was found between omnivores-predators and bacterivores rather than fungivores. Our study suggests that organic management combined with NPK fertilization could effectively enhance the association between microbial and nematode communities, while a crop rotation system with maize may have a negative influence on the structure of the soil micro-food web. (C) 2015 Elsevier B.V. All rights reserved.
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000365998100007
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122331]
专题	中国科学院沈阳应用生态研究所
通讯作者	Liang, Wenju
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110161, Peoples R China 3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 4.Henan Acad Agr Sci, Inst Plant Nutr & Environm Resources Sci, Zhengzhou 450002, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhiyong,Zhang, Xiaoke,Xu, Minggang,et al. Responses of soil micro-food web to long-term fertilization in a wheat-maize rotation system[J]. APPLIED SOIL ECOLOGY,2016,98:56-64.
APA	Zhang, Zhiyong,Zhang, Xiaoke,Xu, Minggang,Zhang, Shuiqing,Huang, Shaomin,&Liang, Wenju.(2016).Responses of soil micro-food web to long-term fertilization in a wheat-maize rotation system.APPLIED SOIL ECOLOGY,98,56-64.
MLA	Zhang, Zhiyong,et al."Responses of soil micro-food web to long-term fertilization in a wheat-maize rotation system".APPLIED SOIL ECOLOGY 98(2016):56-64.