文献类型：期刊文献

英文题名：Soil Chemical and Microbiological Properties Are Changed by Long-Term Chemical Fertilizers That Limit Ecosystem Functioning

作者：Bai, Yong-Chao[1] Chang, Ying-Ying[1] Hussain, Muzammil[2] Lu, Bin[3] Zhang, Jun-Pei[1] Song, Xiao-Bo[1] Lei, Xia-Shuo[1] Pei, Dong[1]

第一作者：Bai, Yong-Chao

通信作者：Pei, D[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, State Forestry & Grassland Adm,Key Lab Tree Breed, Beijing 100091, Peoples R China;[2]Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China;[3]Yunnan Acad Forestry, Kunming 650000, Yunnan, Peoples R China

年份：2020

卷号：8

期号：5

外文期刊名：MICROORGANISMS

收录：;Scopus(收录号：2-s2.0-85084596068);WOS:【SCI-EXPANDED(收录号:WOS:000540222300075)】；

基金：This work was finally supported by the National Key Research and Development Program of China (Grant numbers: 2018YFD1000604) and the Basal Research Fund of Central Public Welfare Scientific Institution of Chinese Academy of Forestry (Grant numbers: CAFYBB2019ZY001). The authors are indebted to Zhi-Bin Luo for suggestions leading to the improvement of the manuscript.

语种：英文

外文关键词：walnut; fertilization; sustainable agriculture; soil chemical properties; microbial communities

摘要：Although the effects of fertilization and microbiota on plant growth have been widely studied, our understanding of the chemical fertilizers to alter soil chemical and microbiological properties in woody plants is still limited. The aim of the present study is to investigate the impact of long-term application of chemical fertilizers on chemical and microbiological properties of root-associated soils of walnut trees. The results show that soil organic matter (OM), pH(kcl), total nitrogen (TN), nitrate-nitrogen (NO3-), and total phosphorus (TP) contents were significantly higher in non-fertilized soil than after chemical fertilization. The long-term fertilization led to excessive ammonium-nitrogen (NH4+) and available phosphorus (AP) residues in the cultivated soil, among which NH4+ resulted in soil acidification and changes in bacterial community structure, while AP reduced fungal diversity. The naturally grown walnut trees led to an enrichment in beneficial bacteria such as Burkholderia, Nitrospira, Pseudomonas, and Candidatus_Solibacter, as well as fungi, including Trichoderma, Lophiostoma, Phomopsis, Ilyonectria, Purpureocillium, Cylindrocladiella, Hyalorbilia, Chaetomium, and Trichoglossum. The presence of these bacterial and fungal genera that have been associated with nutrient mobilization and plant growth was likely related to the higher soil OM, TN, NO3-, and TP contents in the non-fertilized plots. These findings highlight that reduced chemical fertilizers and organic cultivation with beneficial microbiota could be used to improve economic efficiency and benefit the environment in sustainable agriculture.