Journal of Henan Agricultural University. 2018, (05) Core

Effects of cellulose,straw and sawdust on soil nitrification and microorganisms in farmlandChinese Full Text

PAN Yanshuo;ZHU Qinghe;LI Cong;WANG Youjing;WU Kun;LI Xuanzhen;ZHANG Shimin;WU Yucheng;College of Life Sciences,Henan Agricultural University;Institute of Soil Science,Chinese Academy of Sciences;Zhengzhou Meteorological Bureau;College of Forestry,Henan Agricultural University;

Abstract: In order to investigate the effects of different treatments on soil nitrification and soil bacterial communities,a microcosm experiment was conducted combining with high-throughput sequencing in situ for 56 days. Cellulose（ CL）,straw（ ST）,sawdust（ SD） individual and their complex with urea were used to treat the soil collected from. The results indicated that the treatments had a significant effect on the ammonium nitrogen content,nitrate nitrogen accumulation,and bacterial community in soil. At 0 ～ 14 days treatment,the content of soluble ammonium nitrogen in cellulose（ CL）,straw（ ST） and sawdust（ SD） treated soil was decreased significantly. After 14 days,the accumulation of nitrate nitrogen in the soils treated with cellulose,straw and sawdust was significantly lower than that of control（ CK）,and the accumulation of nitrate nitrogen in cellulose + urea（ CL-N）,straw + urea（ ST-N）,and sawdust + urea（ ST-N） treatment were significantly lower than that of single plus urea treatment（ CK-N）. After 56 days,the Chao 1 and Obs index were higher in CL-N treatment,and the bacterial community of CL and CL-N treatment changed the most. Compared with CK,Nitrosospira,Nitrosococcus,Nitrososphaera and Nitrospira were negatively responsive in different treatments.Multiple comparison analysis of the community showed that CK significantly enriched some nitrifying microorganisms,and CL,ST,and SD treatments significantly enriched some cellulose-degrading bacteria,while CL-N,ST-N and SD-N enriched rhizobium. In summary,cellulose,straw and sawdust can effectively retain nitrogen,reducing soil nitrogen loss and change soil microbial communities.

Keywords：

cellulose; straw; sawdust; soil microorganisms; nitrification;

DOI：
10.16445/j.cnki.1000-2340.2018.05.020
Series：
(D) Agriculture
Subject：
Fundamental Science of Agriculture; Agronomy
Classification Code：
S154

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Effects of cellulose,straw and sawdust on soil nitrification and microorganisms in farmlandChinese Full Text

PAN Yanshuo;ZHU Qinghe;LI Cong;WANG Youjing;WU Kun;LI Xuanzhen;ZHANG Shimin;WU Yucheng;College of Life Sciences,Henan Agricultural University;Institute of Soil Science,Chinese Academy of Sciences;Zhengzhou Meteorological Bureau;College of Forestry,Henan Agricultural University;

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