不同秸秆还田方式对土默川平原灌区土壤细菌群落的影响

doi:10.12190/j.issn.2096-1197.2024.04.05

Abstract

Abstract: 【Objective】To explore the effects of different straw returning methods on soil bacterial community in Tumochuan Plain irrigation area.【Methods】Four corn straw returning modes including subsoiling returning straw（SSR）,deep spin returning straw（SCR）,deep tillage returning straw（DPR）,no-tillage returning straw（NTR）,and farmer′s shallow rotation（CK）were the positioning tests. Soil bacterial community diversity was investigated by 16S rDNA amplicon high-throughput sequencing technology,and its correlation with soil physicochemical properties,enzyme activities were analyzed.【Results】There were significant effects in soil bacterial diversity and community composition among different straw returning treatments（P<0.05）,in which,NTR treatment significantly enhanced the abundance of Gemmatimonadetes and Firmicutes（P<0.05）,the abundance of Chloroflexi in DPR treatment was significantly increased（P<0.05）,and the abundance of Actinobacteria was decreased. That the straw returing treatments could significantly improve the soil physicochemical properties and increase soil enzyme activities,among which SSR treatment had the most significant improvement effect（P<0.05）. RDA analysis found that the main physicochemical properties that drive the composition of the soil bacterial community were alkaline hydrolysis nitrogen,available potassium,cation exchange capacity,compaction and bulk density,Arthrobacter,Gaiella,Solirorobacter,Streptomyces were susceptible to soil environmental factors.【Conclusion】The straw returning has a positive effect on the improvement of the soil biological community in the Tumochuan Plain irrigation area.

Key words: Straw returing, High-throughput sequencing, Soil bacterial community, Microbial community structure

CLC Number:

S154.3

ZHAO Wenshan, FENG Biao, LIU Ruizhi, LIANG Hongwei, YU Xiaofang, GAO Julin, Qinggeer. Effects of different straw returning methods on soil bacterial communityin Tumochuan Plain irrigation area[J].Journal of Northern Agriculture, 2024, 52(4): 38-49.

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Effects of different straw returning methods on soil bacterial communityin Tumochuan Plain irrigation area

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