植物营养与肥料学报2001，Vol.7Issue(2)：183-188,6.
土壤干燥过程对土壤易矿化有机态氮的影响
Effects of desiccation of soil samples on easily mineralizing ni trogen
摘要
Abstract
Th e effect of desiccating soil samples (field-fresh, fumigatedwith CHCl3, dryi ng at temperature of room, 40℃ and 105℃) on extractable nitrogen fractions, espe cially on easily mineralizing nitrogen (Norg) was studied. The results sh o wed that there was a little effect onNO3--N contents, but higher NH4+- N and Norg contents were observed while the drying temperature increased. The Norg contents of samples dried at 105℃ was highest among the samples of field-fresh, being fumigated with CHCl3, drying at temperature of room, 40 ℃ and 105℃, which came from not only a part of the microbial biomass nitrogen, b ut also from the decays of large organic molecules of soil nitrogen constituents .关键词
干燥过程/氮素组分/土壤易矿化有机态氮Key words
desiccation/nitrogen fractions/easily mineralizing nitrogen分类
农业科技引用本文复制引用
宋建国,刘伟,赵紫娟,林杉,吴文良,毛达如..土壤干燥过程对土壤易矿化有机态氮的影响[J].植物营养与肥料学报,2001,7(2):183-188,6.基金项目
国家自然科学基金项目（49771052；39630070）资助。 （）
