辽宁农业科学Issue(6)：12-17,6.DOI:10.3969/j.issn.1002-1728.2023.06.003
沼液还田对青储玉米田土壤和微生物菌群的影响
Effect of Breeding Farm Biogas Slurry Application on Soil Mechanical Composition and Microflora In Green Corn Fields
摘要
Abstract
The silage corn fields were divided into equal size plots and the soil was fertilised with different combinations of biogas and chemical fertilisers.After 3 years of continuous application,the nutrients,me-chanical composition and microbial communities of the soil in the test plots were analysed to study the effect of methane return on the physicochemical indexes,mechanical composition and microbial flora of the soil at 20～25 cm depth.The results showed that the organic matter and total nitrogen content of the soil was significantly enhanced in the silage corn fields with different proportions of biogas slurry applied,and the greater the pro-portion of biogas returned to the field,the more obvious the enhancement effect.According to the results of the mechanical composition test,the soil was more clayey and powdery in biogas slurry application group,while coarse and very coarse sand was more predominant in the fertiliser application group.The biogas slurry return promoted changes in the soil microflora.In terms of phylum and phylum level changes,the relative abundance of Aspergillus(phylum)and Actinomycetes(phylum)were the main dominant phylum(phylum),and the relative abundance of Acidobacteria and Phytomycetes increased with the proportion of methane application.the proportion of microbial community in the soil changed and the differences in the species of the community were not significant.Considering the nutrient and the change of physicochemical properties of the silage corn fields,1 ∶ 1～2 ∶ 1 ratio of biogas to fertiliser was found to be a better way.关键词
沼液还田/土壤养分/土壤机械组成/微生物菌群Key words
Breeding farm biogas slurry/Soil nutrients/Soil mechanical composition/Microflora分类
农业科技引用本文复制引用
杜建涛,李靖,韩非,田禹,王兵..沼液还田对青储玉米田土壤和微生物菌群的影响[J].辽宁农业科学,2023,(6):12-17,6.基金项目
辽宁省科学技术计划项目(2019JH/1020003) （2019JH/1020003）
