摘要
采用室内培养试验方法,研究了双氰胺对碳酸氢铵中的铵态氮在土壤中动态变化的影响.结果表明,无论是碳铵与双氰胺的机械混施,还是含双氰胺的长效碳铵,在抑制铵态氮硝化产生硝态氮的同时对氨挥发也有一定的抑制作用,使土壤在更长的时间内保持更高的铵态氮含量,并对碳铵施入后土壤的酸碱化强度起到了缓冲作用.添加双氰胺不但提高了碳铵的氮肥利用率。
Incubation studies on the effect of dicyandiamide (DCD) on NH + 4 N
dynamics of ammonium bicarbonate (AB) in soil show that whether mechanical mixed with AB
or being a component of slow releasing AB,DCD inhibits the nitrification of NH + 4 N and
decreased the ammonium volatilization, which made soil preserve more NH + 4 N in a longer
period and buffered the intensity of soil acidification or alkalization after AB application.Adding
DCD could increase the utility efficiency of AB,and decrease its nitrogen losses.
出处
《应用生态学报》
CAS
CSCD
1999年第2期183-185,共3页
Chinese Journal of Applied Ecology
基金
中国科学院农业重大支持项目
关键词
碳酸氢铵
双氰胺
硝化抑制剂
氮素转化
Ammonium bicarbinate, Dicyandiamide, Nitrification inhibitor.