摘要
以等量氮、磷、钾肥料为前提条件,辅以不同的脲酶/硝化抑制剂,研究土壤中尿素氮的转化及对有效态氮释放速率的影响。试验结果表明:各抑制剂均能有效地降低NH4+-N的转化速率,使NH4+-N最大积累量延后14d左右,并且延缓了NO3--N的释放高峰达60d以上。其作用效果顺序为:NBPT+DCD>NBPT>乙酰甲胺磷>甲胺。
The effects of urea-N transformation and concentration of available-N in soil were studied. In the condition of the same amount of N,P（P2O5）, K（K2O） the experimental results showed： All inhibitors effectively reduced the speed and amount of transformation of NH4^＋-N was postponed about 14 days, and the highest release of NO3^--N was postponed about 60 days. The highest accumulation of NH4^＋-N. The effects ranked as：NBPT＋DCD〉NBPT〉Acephate〉Methylamine.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2005年第2期230-232,共3页
Journal of Shenyang Agricultural University
