作物研究2016，Vol.30Issue(3)：282-287,6.DOI:10.16848/j.cnki.issn.1001-5280.2016.03.12
耕作方式对稻田土壤微生物量碳氮的动态影响
The Dynamic Effect of Different Tillage Methods on Soil Microbial Carbon and Nitrogen in Rice Paddy
摘要
Abstract
To study the dynamic effect of different tillage methods on the soil microbial biomass carbon (SMBC)and soil microbial biomass nitrogen (SMBN)in rice paddy,long-term no-tillage (NT)and conventional tillage (CT)methods were used to analyze the content change of soil microbial biomass carbon and nitrogen in different growth stages on rice.The re-sults showed that the soil organic matter (SOM)content of the NT treatment increased 13.09% compared with the CT;the SMBC and SMBN contents of the CT treatment was higher than that of the NT treatment.The SMBC content of the CT treat-ment,before the rice planting and after harvesting is significantly higher than no-tillage treatment by 20.58% and 16.79%respectively;while the difference is not significant during the rice growing stages.The SMBN content of the CT treatment is significantly higher than that of the NT treatment in late tillering stage (by 31.70%),booting stage (by 38.42%),yellow ripening stage (by 41.82%),and after harvesting(by 98.96%).The soil microbial biomass carbon/nitrogen ratio in NT treatment is higher than that in CT treatment.Results suggest that no-tillage method is beneficial to SOC accumulation,con-ventional tillage method is good for the increasing of soil microbial,SMBC and SMBN content,and enhancing biological ef-fectiveness of soil nitrogen.关键词
稻田/耕作方式/土壤微生物量碳/土壤微生物量氮Key words
rice paddy/tillage method/soil microbial biomass carbon/soil microbial biomass nitrogen分类
农业科技引用本文复制引用
唐先亮,魏甲彬,周玲红,徐华勤,邹应斌,唐剑武..耕作方式对稻田土壤微生物量碳氮的动态影响[J].作物研究,2016,30(3):282-287,6.基金项目
湖南省科技计划项目（2014RS4002）；教育部博士点基金（20134320110004）；国家自然科学基金（31100382）。 （）
