Enhancing biomass and ecological sustainability in rice–fish cocropping systems through the induction of functional microbiota with compound biogenic bait  

作　　者：Yang Zhang Ying-Han Liu Dan-Yao Tang Jun Zhang Xi-Yue Zhang Chen-Wei Xu Yu-Juan Yuan Chuan-Chao Dai 

机构地区：[1]Jiangsu Key Laboratory for Microbes and Functional Genomics,Jiangsu Engineering and Technology Research Centre for Industrialization of Microbial Resources,College of Life Sciences,Nanjing Normal University,Nanjing 210023,China [2]Jiangsu Province Engineering Research Center of Agricultural and Rural Pollution Prevention Technology and Equipment,Nantong 226007,China [3]Nantong College of Science and Technology,Nantong 226007,China

出　　处：《Soil Ecology Letters》2024年第4期175-187,共13页土壤生态学快报(英文)

基　　金：supported by the National Natural Science Foundation of China(Grant No.32001210);the Opening Project of Jiangsu Province Engineering Research Center of Agricultural and Rural Pollution Prevention Technology and Equipment(Grant No.GCZXZD2301);the Natural Science Foundation of the Jiangsu Higher Education Institution of China(Grant No.22KJB180003).

摘　　要：Compound biological bait can replace commercial bait to ensure fish growth.The compound biogenic bait can effectively improve the water and soil environment.The key microbiome induced by compound biogenic bait plays an important role.Traditional commercial aquatic fish bait(CA)is not conducive to the scientific breeding of rice and fish in cocropping systems,and excessive feeding easily causes environmental pollution in rice fields.In this study,an environment-friendly compound biogenic bait(CB)mixed with plant-derived(PB)and animal-derived(AB)baits was proposed.The rice–crucian carp cocropping system was used as the research object,and the soil microorganisms and fish gut microorganisms were sequenced with high throughput,respectively,to verify the effect of CB application and the microbial mechanism underlying its functional effect.The results showed that the AB and PB components in CB maintain the growth of fish by improving the metabolism-related functions of fish gut microbiome and reducing the abundance of intestinal pathogenic bacteria,including Actinomadura.In particular,the PB components induced soil microbiome,such as Pseudonocardia,that participate in soil nutrient cycling and increase dissolved oxygen in water,which is key for improving rice quality and yield.This is the first study to focus on how different bait components drive key microbial communities to regulate animal–plant–environment relationships in the integrated planting and breeding patterns of paddy fields.

关 键 词：rice soil rice-fish cocropping fish bait high-throughput sequencing microbial community 

分 类 号：S154[农业科学—土壤学]