Journal of Northern Agriculture ›› 2021, Vol. 49 ›› Issue (3): 64-73.doi: 10.12190/j.issn.2096-1197.2021.03.09

• Soil and fertilizer·Agroecology environment • Previous Articles     Next Articles

Effects of different tillage methods on soil enzyme activity,microbial biomass and community composition

FENG Biao1, Qinggeer1, GAO Julin1, YU Xiaofang1, HU Shuping2, ZHANG Xin1, XUE Hongfei1, LIU Ruizhi1, LIU Aiye3   

  1. 1. College of Agriculture,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2. College of Vocational and Technical,Inner Mongolia Agricultural University,Salaqi 014109,China;
    3. Bureau of Agriculture,Animal Husbandry and Science and Technology of Urad Front Banner of Bayannur City,Wulasha 015400,China
  • Received:2021-03-29 Online:2021-06-20 Published:2021-08-23

Abstract: 【Objective】 To clarify the differences in soil enzyme activity,microbial quantity and community composition under different short-term tillage methods in the irrigation area of Tumedchuan Plain,and provide a theoretical basis for the rational use of tillage methods in this region.【Methods】 The experimentation adopted the regional design;five tillage measures including no tillage(NT),deep ploughing(DP),subsoiling(SS),strip deep rotation(SC)and farmer shallow rotation(CK)were set up;and the differences of soil enzyme activity,microbial quantity,microbial biomass carbon and microbial biomass nitrogen were analyzed;16S rRNA extender sequencing method was used to explore the microbial community composition.【Results】 DP and SS treatments had significant effects on the increase of soil microbial quantity,microbial biomass carbon,microbial biomass nitrogen and soil enzyme activity,and the difference was significant between years(P<0.05). The composition of soil bacterial community under different tillage methods was similar,but there were significant differences in species abundance(P<0.05),mainly reflected in Actinobactera,Proteobacteria,Chloroflex and Acidobacteria. Among them,Actinobactera,Chloroflexi and Acidobacteria were the most abundant bacteria in the soil dominant bacteria phyla under DP treatment,and RB41,Bacillus,Sphingomonas and Rubrobacter were the most abundant bacteria genus in SS treatment. DP and SS treatments significantly increased soil catalase activity,sucrase activity,protease activity,microbial quantity,microbial biomass carbon content,and microbial biomass nitrogen content,making Chloroflexi,Firmicutes and Planctomycetes and other bacteria genus such as RB41NordellaBacillus,and Sphingomona increase,promoted material circulation;CK treatment of soil bacterial communities was not sensitive to changes in biological indicators;NT treatment increased Actinobactera and GaiellaMND1;SC treatment increased Gemmatimonadetes and Sphingomonas.【Conclusion】Both subsoiling treatment and deep plowing treatments could significantly increase soil enzyme activity,microbial biomass and microbial community composition,and then improve soil quality. Among them,subsoiling treatment had the most significant effect,followed by deep plowing treatment.

Key words: Tillage methods, Soil microbial biomass, Soil enzyme activity, Microbial community

CLC Number: 

  • S153