农业环境科学学报2024，Vol.43Issue(4)：874-885,12.DOI:10.11654/jaes.2023-0535
不同轮作模式对稻田土壤肥力和微生物群落结构的影响
Effects of different rotation patterns on soil fertility and microbial community composition in a paddy field system
摘要
Abstract
Rotation patterns play a significant role in the ecologically sustainable development of rice cultivation.To evaluate the effects of different rice rotation patterns on soil microbial community structure and its relationship with soil nutrient supply,high-throughput sequencing technology was used to analyze variations in soil bacterial and fungal community compositions under three different rice rotation patterns[rice-wheat rotation,rice-Chinese milk vetch(CMV)rotation,and rice-fallow rotation].Then,the relationship of soil microbial variations with soil environmental factors was discussed.The results showed that the rice-CMV rotation system significantly improved the comprehensive fertility of paddy soil,and the contents of total nitrogen(TN)and available nitrogen(AN)in the soil were significantly increased after CMV was continuously rolled back into the field.Furthermore,the impacts of different rice rotation patterns on soil microbial community composition were greater for soil bacteria than soil fungi.In the rice-CMV rotation pattern,the enrichment of dominant bacteria such as Acidobacteriota and Ascomycota contributed to soil nutrient cycling and ecological health.Changes in soil nutrients such as TN,AN,total potassium(TK),and available potassium(AK)under different rotation patterns are supposed to be the main driving factors for the changes in soil bacterial and fungal community structures.In addition,the results indicated that the bacterial community structure in paddy soil was more sensitive to variations in environmental factors than the fungal community structure.In summary,our results showed that the rice-CMV rotation pattern was better than rice-wheat and rice-fallow rotation patterns for sustainable ecological rice cultivation and can significantly improve soil comprehensive fertility,thus enhancing the health of soil microecology.关键词
水稻轮作/紫云英/土壤微生物/群落结构/土壤养分Key words
rice rotation/Chinese milk vetch/soil microbial composition/community structure/soil nutrients分类
农业科技引用本文复制引用
赵峥,朱元宏,周德平,褚长彬,王庆峰,吴淑杭..不同轮作模式对稻田土壤肥力和微生物群落结构的影响[J].农业环境科学学报,2024,43(4):874-885,12.基金项目
上海市科技人才计划项目(19YF1442900) （19YF1442900）
长三角数字干线青浦区科技发展基金项目(青科发2022-24) （青科发2022-24）
上海市科技兴农项目(沪农科推字[2021]第1-4号)The Shanghai Sailing Program(19YF1442900) （沪农科推字[2021]第1-4号）
The Qingpu Science and Technology Development Fund Project of Yangtze River Delta Digital Trunk Line(Qingkefa 2022-24) （Qingkefa 2022-24）
Shanghai Science and Technology Agriculture Project(Hu Nong Ke Tuizi[2021]No.1-4) （Hu Nong Ke Tuizi[2021]No.1-4）
