摘要
在淹水条件下，采用每隔一定时间取样分析的连续培养方法，研究了土壤有机氮的矿化过程。试验表明，与间歇淋洗相比，连续培养条件下有机氮矿化过程较慢，矿化累积量较少，且达一定程度后明显降低。但该法在反映不同土壤矿化量高低、不同有机质矿化难易、不同土壤对加入有机物的矿化速率与间歇淋洗法有同样功效；两种培养方法３２ｄ的矿化量也有密切线性关系。
Under continuously waterlogged incubation conditions,soil samples were taken for determination of mineralized N at an interval time without leaching during the incubated period to study the mineralization processes of soils organic N.The results showed that as compared with the mineralized N by intermittent leaching,the N mineralization processes of this procedure were much slow,and the cumulatively mineralized N became less and decreased obviously when reached a certain extent.However,the continuously waterlogged incubation played the same function as the intermittent leaching procedure in reflection of soils mineralized N level,mineralization degree and rate of different organic matter added to soils with different fertilities.In addition,the mineralized N amounts during 32 days incubation by the two procedures were linearly related closely.
出处
《西北农业大学学报》
CSCD
北大核心
1999年第1期1-5,共5页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
国家自然科学基金
关键词
氮素矿化
连续淹水培养
间歇淋洗
土壤
N mineralization,continuously waterlogged incubation,intermittent leaching of mineralized N
