新疆农业大学学报2025，Vol.48Issue(6)：523-530,8.DOI:10.20088/j.cnki.jxau.2025.06.009
地膜残留量对棉田土壤细菌多样性与组成变化的影响
Effects of Residual Amount of Plastic Film on the Diversity and Composition Changes of Soil Bacterial Communities in Cotton Fields
摘要
Abstract
In order to explore the effects of different plastic film residues on the diversity and composition of soil bacteria in cotton field,eight residual film densities of 0,250,500,1 000,1 500,2 000,3 000,and 4 000 kg/hm2 were set in 0-30 cm soil layer,and the diversity and composition of soil bacteria were ana-lyzed by high-throughput sequencing technique.The results showed that the OTUs and Chao1 index of soil bacteria in 2 000 kg/hm2 treatment were significantly higher than those in 500 kg/hm2 treatment(P<0.05),but there was no significant difference among other treatments(P>0.05).Shannon index of 3 000 kg/hm2 was significantly higher than those of 500 kg/hm2,1 000 kg/hm2,2 000 kg/hm2 and 3 000 kg/hm2,but there was no significant difference among other treatments.Under different residual film treat-ments,the dominant bacteria in the soil were Acidobacteriota,Gemmatimonadota,and Actinobacteriota,and their relative abundance accounts for over 50%.Correlation analysis indicated that the soil bacterial Shan-non index was significantly influenced by pH.At the phylum level,Acidobacteriota and Planctomycetota were strongly affected by environmental factors.Furthermore,the contents of soil available potassium,to-tal nitrogen,total potassium,soil organic matter,bulk density,field capacity and saturated water content had not changed significantly under each plastic film residue treatment,but the plastic film residue with a density of≥3 000 kg/hm2 might affect the soil physical and chemical microenvironment through indirect ways,thus reducing the soil microbial biomass and its abundance.关键词
地膜残留/土壤微生物/多样性/细菌组成Key words
plastic film residue/soil microorganism/diversity/bacterial structure分类
农业科技引用本文复制引用
唐涛,胡云鹏,买迪努尔·阿不来孜,杨志莹,贾宏涛..地膜残留量对棉田土壤细菌多样性与组成变化的影响[J].新疆农业大学学报,2025,48(6):523-530,8.基金项目
新疆维吾尔自治区重点研发专项课题(2022B02017-1) （2022B02017-1）
新疆农业科学院青年科技骨干创新能力培养项目 （）
