Long-term cropping rotation with soybean enhances soil health as evidenced by improved nutrient cycles through keystone phylotypes interaction  

作　　者：Xiaowei Huang Jing Yuan Yuxuan Chen Xueling Yang Wencheng Lu Surong Ding Yu Jiang Xuechao Zhou Gang Mi Jianming Xu Yan He 

机构地区：[1]Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment,Institute of Soil and Water Resources and Environmental Science,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China [2]Key Laboratory of Environment Remediation and Ecological Health,Ministry of Education,Hangzhou 310058,China [3]Senseable City Lab,Department of Urban Studies and Planning,Massachusetts Institute of Technology,Cambridge,MA 02139,USA [4]Heihe Branch of Heilongjiang Academy of Agricultural Sciences,Heihe 164300,China [5]Chifeng Agricultural and Animal Husbandry Research Institute,Chifeng 024031,China

出　　处：《Soil Ecology Letters》2024年第4期189-202,共14页土壤生态学快报(英文)

基　　金：financially supported by Zhejiang Provincial Key Research and Development Program of China(Grant No.2023C02004);the National Natural Science Foundation of China(Grant Nos.42225705 and 42177006);China Agriculture Research System of MOF and MARA(Grant No.CARS-04).

摘　　要：We estimated the effect of three crop strategies on soil health based on 63 functional genes in long-term fields.The keystone microbial phylotypes support the agroecosystem sustainability.Rotation management thrives keystone phylotypes and soil functions.Rotation with soybean is beneficial for the subsequent crops.Given the often-independent study of microbial diversity and function,the comprehensive impact of various cropping patterns on both aspects,as well as the interconnections between them,remains unclear.This gap constrains us from evaluating the impact of soil microbiome shifts on soil health across varying agricultural management regimes.Here,we examined the associations between microbial diversity and soil multifunctionality in three long-term cropping patterns:continuous soybean cropping,soybeancorn rotation,and continuous corn cropping.We targeted 63 functional genes associated with carbon,nitrogen,phosphorus and sulfur cycling to assess soil multifunctionality.Our study demonstrated that the biodiversity and interactions of keystone phylotypes had significant positive associations with multiple soil functional genes,such as organic carbon degradation and fixation,nitrogen fixation and phosphorus solubilization.The analysis of retrieved complete genome revealed that the keystone bacteria identified in our study harbored these functional genes.Moreover,these keystone phylotypes showed associations with the dissipation of herbicide residues.Above all,we revealed that rotation of soybean with corn cropping enhanced a greater diversity of keystone phylotypes and thus fueled soil functions.Collectively,our results highlighted the importance of rotation with soybean in maintaining soil health,which could give a mechanism-based guidance for a sustainable agroecosystem.

关 键 词：soil nutrient cycles keystone phylotypes ROTATION SOYBEAN sustainable agroecosystem 

分 类 号：S154.3[农业科学—土壤学]