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1.Different Consistence DCD Influence on the Transformation of NH_4 N in Soil
不同浓度双氰胺对土壤铵态氮变化的影响收藏指正
2.Through the simulating experiment that different consistence of DCD (dicyandiamid) influence on the transformation of NH 4 N (ammonium nitrogen) with there different soil samples in lab, the paper gets the optimal consistence of adding the DCD while the general NH 4HCO 3 are used in different soils.
利用3 个不同土样在实验室内进行不同浓度双氰胺（DCD） 对土壤NH4?N 含量变化影响的模拟试验，得出在不同土壤上施用普通碳酸氢铵（ 以下简称普通碳铵） 添加DCD 的最佳浓度。收藏指正
3.The consistence of 0 5%, 0 3%, 0 3% is optimal respectively when the DCD is added in order to both hold up the loss and accelerate the transformation of NH 4 N in Purple, Yellow Soil and Aquent.
在紫色土、潮土和黄壤上添加DCD抑制NH4?N 损失和转化的效果分别以0－5 ％ 、0－3 ％ 、0－3 ％ 浓度为最佳。收藏指正
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