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A balanced reduction in mineral fertilizers benefits P reserve and inorganic P-solubilizing bacterial communities under residue input

文献类型：期刊论文

作者Jiang, Nan1; Wei, Kai2; Pu, Jiahui1,3; Huang, Wenjing1,3; Bao, Hongxu4; Chen, Lijun1
刊名APPLIED SOIL ECOLOGY
出版日期2021-03-01
卷号159页码:10
ISSN号0929-1393
关键词Crop residue input Mineral fertilizers reduction Soil phosphorus fractions Inorganic P-solubilizing bacteria pqqC
DOI10.1016/j.apsoil.2020.103833
通讯作者Chen, Lijun(ljchenchina@hotmail.com)
英文摘要Given the contribution of crop residue to soil phosphorus (P) pools, reducing mineral fertilizers should be a worthy management goal in agro-ecosystems for the rational use of scarce P resources. However, little data on whether and how P availability and P-solubilizing bacterial communities change under this condition are accessible. Here, in addition to conventional NPK fertilizers (NPK) and maize straw mulching (NPKS), residue mulching combined with a 20% reduction in only mineral P (NPmKS) or simultaneous NPK (mNPKS) was used on fields with successive years of mineral fertilizers in Northeast China. After two growing seasons, maize yield and total P were consistent across treatments. Nonetheless, compared to NPK, easily labile inorganic P and stable organic P significantly increased in NPKS, which suggests that the risk of P loss and P reserve for long-term transformation increased with residue input. The content of the two P forms recovered separately in mNPKS and NPmKS, which indicates that a balanced reduction in mineral fertilizers may be better for maintaining the P supply. High-throughput sequencing of the pqqC gene, which encodes pyrroloquinoline quinone related to P solubilization, suggested significant contrasts between the inorganic P-solubilizing bacterial communities of NPK and other treatments, nearly 70% of which could be explained by P fractions. In particular, moderately labile inorganic P played a bridging role between P fractions and P-solubilizing bacterial species. Moreover, the correlation between P fractions and P-solubilizing bacteria was enhanced when pH increased, i. e. , in mNPKS, which further confirmed the advantages of a balanced reduction in mineral fertilizers in P-solubilizing bacteria.
WOS关键词TERM PHOSPHORUS FERTILIZATION ; SOIL ORGANIC-MATTER ; NUTRIENT AVAILABILITY ; LITTER DECOMPOSITION ; LAND-USE ; MICROBIAL COMMUNITY ; AGRICULTURAL SOILS ; CROP ; FRACTIONS ; DIVERSITY
资助项目National Key Research and Development Program of China[2016YFD0200307] ; National Natural Science Foundation of China[41877108]
WOS研究方向Agriculture
语种英语
出版者ELSEVIER
WOS记录号WOS:000609456600007
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.imde.ac.cn/handle/131551/55954]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Chen, Lijun
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Liaoning Univ, Sch Environm Sci, Shenyang 110036, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Nan,Wei, Kai,Pu, Jiahui,et al. A balanced reduction in mineral fertilizers benefits P reserve and inorganic P-solubilizing bacterial communities under residue input[J]. APPLIED SOIL ECOLOGY,2021,159:10.
APA Jiang, Nan,Wei, Kai,Pu, Jiahui,Huang, Wenjing,Bao, Hongxu,&Chen, Lijun.(2021).A balanced reduction in mineral fertilizers benefits P reserve and inorganic P-solubilizing bacterial communities under residue input.APPLIED SOIL ECOLOGY,159,10.
MLA Jiang, Nan,et al."A balanced reduction in mineral fertilizers benefits P reserve and inorganic P-solubilizing bacterial communities under residue input".APPLIED SOIL ECOLOGY 159(2021):10.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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