首页|Green manuring relocates microbiomes in driving the soil functionality of nitrogen cycling to obtain preferable grain yields in thirty years

Green manuring relocates microbiomes in driving the soil functionality of nitrogen cycling to obtain preferable grain yields in thirty years

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Fertilizers are widely used to produce more food,inevitably altering the diversity and composition of soil organisms.The role of soil biodiversity in controlling multiple ecosystem services remains unclear,especially after decades of fertilization.Here,we assess the con-tribution of the soil functionalities of carbon(C),nitrogen(N),and phosphorus(P)cycling to crop production and explore how soil organisms control these functionalities in a 33-year field fertilization experiment.The long-term application of green manure or cow manure produced wheat yields equivalent to those obtained with chemical N,with the former providing higher soil functions and allowing the functionality of N cycling(especially soil N mineralization and biological N fixation)to control wheat production.The keystone phy-lotypes within the global network rather than the overall microbial community dominated the soil multifunctionality and functionality of C,N,and P cycling across the soil profile(0-100 cm).We further confirmed that these keystone phylotypes consisted of many metabolic pathways of nutrient cycling and essential microbes involved in organic C mineralization,N2O release,and biological N fixation.The chemical N,green manure,and cow manure resulted in the highest abundances of amoB,nifH,and GH48 genes and Nitrosomonadaceae,Azospirillaceae,and Sphingomonadaceae within the keystone phylotypes,and these microbes were significantly and positively correlated with N2O release,N fixation,and organic C mineralization,respectively.Moreover,our results demonstrated that organic fertilization increased the effects of the network size and keystone phylotypes on the subsoil functions by facilitating the migration of soil micro-organisms across the soil profiles and green manure with the highest migration rates.This study highlights the importance of the func-tionality of N cycling in controlling crop production and keystone phylotypes in regulating soil functions,and provides selectable fertilization strategies for maintaining crop production and soil functions across soil profiles in agricultural ecosystems.

soil biodiversitysoil multifunctionalityelement cyclingkeystone phylotypes

Guopeng Zhou、Kunkun Fan、Songjuan Gao、Danna Chang、Guilong Li、Ting Liang、Hai Liang、Shun Li、Jiudong Zhang、Zongxian Che、Weidong Cao

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State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China

State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China

Institute of Soil & Fertilizer and Resource & Environment,Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China

Institute of Soil and Fertilizer and Water-saving Agriculture,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China

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国家重点研发计划earmarked fund for CARS-Green manureAgricultural Science and Technology Innovation Program of CAAS

2021YFD1700200CARS-22

2024

10.1007/s11427-023-2432-9

中国科学:生命科学(英文版)
中国科学院

中国科学:生命科学(英文版)

CSTPCD
影响因子：0.806
ISSN：1674-7305
年,卷(期)：2024.67(3)
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