Dai Yu, He Ji-Zheng, Shen Ju-Pei
Ying Yong Sheng Tai Xue Bao. 2014 Jan;25(1):279-86.
The low utilization efficiency of nitrogen fertilizer in agricultural ecosystem has caused serious economic and environmental issues. Dicyandiamide (DCD) is a widely used nitrification inhibitor, which can inhibit nitrification via affecting ammonia oxidizing microorganisms with minimal influence on other soil microorganisms, thereby reducing the leaching of nitrate and emission of greenhouse gases. The factors influencing the efficiency of DCD in soil include soil temperature, pH, texture, organic matter, moisture, etc. Recently, the application of molecular methods in agricultural systems has shed new light on the microbial mechanism underlying nitrification inhibition by DCD. In this review, the enzymatic inhibition mechanism, the application effects and their influence factors of DCD were summarized, and the prospects of its application were discussed as well.
农业生态系统中氮肥利用效率低下已引发严重的经济和环境问题。双氰胺（DCD）是一种广泛使用的硝化抑制剂，它可以通过影响氨氧化微生物来抑制硝化作用，而对其他土壤微生物的影响最小，从而减少硝酸盐淋失和温室气体排放。影响DCD在土壤中效率的因素包括土壤温度、pH值、质地、有机质、湿度等。近年来，分子方法在农业系统中的应用为DCD抑制硝化作用的微生物机制提供了新的线索。本文综述了DCD的酶抑制机制、应用效果及其影响因素，并对其应用前景进行了探讨。
