土壤学报2024，Vol.61Issue(2)：549-561,13.DOI:10.11766/trxb202208050430
梨树枝条粉碎覆盖对梨园土壤养分和微生物组的影响
Effects of Pear Pruning Branches Mulching on Soil Nutrition and Microbial Community Structures
摘要
Abstract
[Objective]As a by-product of fruit tree shaping and pruning,pear branches are important biomass resources.The use of crushed branches for soil mulch under trees is one of the effective ways to utilize waste resources,which is conducive to increasing soil organic matter and improving soil fertility in pear orchards.[Method]In order to assess the effects of short-term pear branch mulching on soil properties and structure of microbial community,soil samples were collected from five pear orchards in different latitudes(Bijie City of Guizhou Province,Changli City of Hebei Province,Harbin City of Heilongjiang Province,Zhijiang City of Hubei Province and Xuchang City of Henan Province)after 1-2 years of mulching.Soil basic physiochemical characteristics of the soil and the bacterial,fungal and protist communities were detected.[Result]Results showed that the soil organic matter and available phosphorus content were significantly increased in pear branches mulching treatment in general,and the soil bacterial,fungal and protists community structure also changed significantly.Specifically,the mulching of pear branches significantly enriched the relative abundance of taxa such as Proteobacteria and Acidobacteria in bacteria,Basidiomycota in fungi,and Rhizaria and Alveolata in protists.The model prediction accuracy was as high as 94.44％,and the key species were mainly bacteria,including Acidibacter,Xanthobacteraceae,Nitrosomonadacee and other microorganisms related to the degradation of organic residues.Soil-available phosphorus content was found to be the main driver of variations in soil microbial community structure.[Conclusion]The study preliminarily assessed the effect of pear tree branch mulching on soil nutrients and microbiome and excavated potential key microorganisms.The findings can serve as a reference for managing the health and fertility of orchard soils.关键词
梨修剪枝条/覆盖/土壤理化性状/微生物组/关键物种Key words
Pear pruning branches/Mulching/Soil physicochemical properties/Microbial community/Keystone taxa分类
农业科技引用本文复制引用
杨天杰,徐阳春,王孝芳,胡红菊,杨健,藕继旺,王晓祥,郝宝锋,王中华,董彩霞..梨树枝条粉碎覆盖对梨园土壤养分和微生物组的影响[J].土壤学报,2024,61(2):549-561,13.基金项目
国家梨产业技术体系岗位专家经费项目(CARS-28)、中国博士后科学基金项目(2019M650116)和江苏省博士后科研资助计划项目(2018K200C)资助 Supported by the Earmarked Fund for CARS(No.CARS-28),the Postdoctoral Science Foundation of China(No.2019M650116)and the Postdoctoral Research Funding Program of Jiangsu Province,China(No.2018K200C) （CARS-28）
