农业生态系统长期试验在农业和环境研究中的作用  

Application of Long-Term Agroecosystem Experiments in the Research of Agricultural and Environmental Fields

作　　者：张莎娜[1] 谭长银[1] 万大娟[1] 杨燕[1] 彭渤[1] 夏伟霞 

机构地区：[1]湖南师范大学资源与环境科学学院,中国长沙410081

出　　处：《湖南师范大学自然科学学报》2013年第6期72-78,共7页Journal of Natural Science of Hunan Normal University

基　　金：国家自然科学基金资助项目(41071216);湖南省教育厅科研资助项目(11A066)

摘　　要：农业生态系统长期试验已成为研究农业生态系统生态过程、环境效应和调控措施的重要手段.在综合国内外农业生态系统长期试验发展概况的基础上,分析了长期施用化肥和有机肥对土壤肥力及农作物产量、土壤微生物活性及微生物多样性的影响,阐明了长期施肥在土壤温室气体排放、土壤重金属积累及其迁移转化过程等相关环境问题中的作用.Long-term agroecosystem experiments have become important research methods in the field of agro-ecological processes , environmental effects and controls .Based on the introduction of developments of long-term agroecosystem experiments at home and abroad , the effects of long-term application of chemical and organic fertiliz-ers on soil fertility, crop yields, microbial activities and diversity were analyzed , and the applications of long-term agroecosystem experiments in research of environmental problems related with soil , such as greenhouse gas emis-sions, heavy metal accumulation and migration and transformation process , etc were also clarified.

关 键 词：长期试验 土壤肥力 土壤微生物 重金属 碳排放 

分 类 号：S181[农业科学—农业基础科学]