DUN Yuanyuan,DU Chunmei,JIANG Zhongyuan,et al.Effect of Long-term Dry Land Turning Into Paddy Field on Transforming Nitrogen Microorganisms[J].Northern Horticulture,2015,39(18):175-178.[doi:10.11937/bfyy.201518047]
长期旱改水对土壤氮素转化微生物的影响
- Title:
- Effect of Long-term Dry Land Turning Into Paddy Field on Transforming Nitrogen Microorganisms
- Keywords:
- dry land; paddy field; microorganisms; nitrogen
- 文献标志码:
- A
- 摘要:
- 以黑龙江省桦川县黑土为研究对象,通过对比分析不同旱田改水田年限土壤中硝化细菌、亚硝化细菌、好氧自生固氮菌、氨化细菌、反硝化细菌的数量来探讨旱田改水田对土壤氮素转化微生物的影响。结果表明:旱田改水田有利于硝化细菌、亚硝化细菌、好氧自生固氮菌、氨化细菌的积累,不利于反硝化细菌的积累。随着旱田改水田年限的增加,硝化细菌与亚硝化细菌先增加后减少,好氧自生固氮菌先减少后增加,反硝化细菌数量逐渐降低;其中,旱田改水田年限为10年时硝化细菌、亚硝化细菌最多,好氧自生固氮菌最少。
- Abstract:
- Taking the black soil in Huachuan county,Heilongjiang Province as the research object,by analyzing and comparing the numbers of nitrobacteria,nitrosobacteria,aerobic nitrogen-fixed bacteria,ammonifying bacteria and denitrifying bacteria in the soil which changing from dry land to paddy in different years,to explore the influence of microorganisms of changing nitrogen element.The results showed that the numbers of nitrobacteria,nitrosobacteria,aerobic nitrogen-fixed bacteria,ammonifying bacteria increased,but the numbers of denitrifying bacteria decreased after turning dry land into paddy.With the increasing of paddy years,the numbers of nitrobacteria and nitrosobacteria increased at first then decreased.The numbers of aerobic nitrogen-fixed bacteria decreased at first then increased.The numbers of denitrifying bacteria decreased gradually.Among them,the numbers of nitrobacteria and nitrosobacteria which were paddy for ten years were the more abundant.However,the numbers of aerobic nitrogen-fixed bacteria were the least.
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备注/Memo
第一作者简介:顿圆圆(1989-),女,黑龙江绥化人,硕士研究生,研究方向为环境微生物学。E-mail:dunyuanyuan888@163.com.责任作者:董锡文(1965-),男,黑龙江佳木斯人,博士,教授,硕士生导师,现主要从事微生物学等教学与科研工作。E-mail:dongxiwen@126.com.基金项目:佳木斯大学研究生科技创新资助项目(LZR2014_001)。