南方农业学报2024，Vol.55Issue(4)：920-931,12.DOI:10.3969/j.issn.2095-1191.2024.04.002
不同种植模式对栝楼根际土壤微生物群落多样性的影响
Effects of different planting patterns on microbial community diversity in rhizosphere soil of Trichosanthes kirilowii Maxim
摘要
Abstract
[Objective]The effects of different planting patterns on soil physicochemical properties and the diversity of microbial communities in the rhizosphere soil of Trichosanthes kirilowii Maxim were analyzed to provide a theoretical ba-sis for exploring reasonable and effective strategies to reduce the continuous cropping obstacles of T.kirilowii.[Method]Continuous cropping(control),continuous cropping-tillage-planting new seedlings and T.kirilowii-rice rotation were set to determine and compare the soil physicochemical properties and microbial community structure and diversity.The corre-lation between soil physicochemical properties and microbial community structure was also explored by canonical correla-tion analysis.[Result]Under T.kirilowii-rice rotation and continuous cropping-tillage-planting new seedlings,contents of organic carbon,total nitrogen,total phosphorus,alkaline nitrogen,available phosphorus in the rhizosphere of T.kirilowii were significantly higher than control(P<0.05,the same below).The results of high-throughput sequencing showed that continuous cropping-tillage-planting new seedlings pattern could significantly increase the diversity and abundance of bac-terial community in the rhizosphere soil,but abundance and diversity of fungal community was not significantly different from control(P>0.05),and the relative abundance of important pathogenic fungi(Stagonosporopsis and Colletotrichum)remained at a high level.T.kirilowii-rice rotation could significantly reduce the abundance and diversity of soil fungal communities and the relative abundance of harmful fungi(Stagonosporopsis and Colletotrichum).The results of canoni-cal correlation analysis showed that there were obvious differences in soil microbial communities under different planting patterns.The contents of soil organic carbon,total nitrogen,total phosphorus,total potassium,alkaline nitrogen,available potassium and available phosphorus could significantly affect the distribution of bacterial and fungal species in the rhizo-sphere soil of T.kirilowii.[Conclusion]T.kirilowii-rice rotation can increase soil quality,reduce the abundance and diver-sity of soil fungal communities,and reduce the relative abundance of harmful fungi.The planting patterns is superior to continuous cropping-tillage-planting new seedlings in reducing the continuous cropping obstacles of T.kirilowii.关键词
栝楼/轮作/微生物群落多样性/连作障碍Key words
Trichosanthes kirilowii Maxim/rotation/microbial community diversity/continuous cropping obstacle分类
农业科技引用本文复制引用
徐筋燕,何晓兰,邵明灿,万云龙,郭万君,施苏配,杨中海,潘明如,郭书巧..不同种植模式对栝楼根际土壤微生物群落多样性的影响[J].南方农业学报,2024,55(4):920-931,12.基金项目
江苏省苏北科技专项(SZ-HA2021034) （SZ-HA2021034）
江苏省农业科技自主创新资金项目[CX(21)3167] Jiangsu Subei Science and Technology Special Project(SZ-HA2021034) （21）
Jiangsu Agricultural Science and Technology Independent Innovation Project[CX(21)3167] （21）
