摘要
采用Stanford和Smith的间歇淋洗好气矿化培养法研究了添加外源底物对东北黑土有机氮矿化进程和矿化速率的影响。结果表明,葡萄糖能够降低土壤有机氮的矿化进程和矿化速率,促进土壤有机氮的固定。葡萄糖与氮肥配施处理也表现出对土壤有机氮的截获作用。葡萄糖对土壤有机氮的矿化具有调控作用,这对于提高农田土壤氮素利用率、减少氮素损失具有重要意义。
Effects of extraneous substrates on the process and rate of organic nitrogen mineralization in black soil, Northeast China was studied, using the Stanford and Smith mineralization and incubation method. Results show that addition of glucose inhibited mineralization process and reduced mineralization rate of soil organic nitrogen and promoted fixation of soil nitrogen, and that combined application of glucose and nitrogen demonstrated positive effect on sequestration of organic nitrogen. In conclusion, glucose could regulate mineralization of soil organic nitrogen, which is of important significance in improving nitrogen utilization efficiency and reducing nitrogen loss in farmland.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2009年第4期52-54,82,共4页
Journal of Ecology and Rural Environment
基金
国家科技支撑项目(2008BADA7B08
2007BAD89B02)
中国科学院沈阳应用生态研究所陆地生态过程重点实验室项目(08ZDS151SS)
中国科学院沈阳应用生态研究所博士启动基金
关键词
氮
矿化
葡萄糖
黑土
nitrogen
mineralization
glucose
black soil
