[Effects of different nitrogen regulators on nitrogen transformation in different soil types].

Abstract

Laboratory incubation experiments were conducted to compare the inhibitory effects of dicyandiamide (DCD) and 3,5-dimethylpyrazole (DMP) on nitrification in meadow-cinnamon soil and fluvo-aquic soil, the main soil types of North China Plain. The synergistic effect of DMP combined with urease inhibitor hydroquinone (HQ) on nitrogen transformation in fluvo-aquic soil was further studied. The results indicated that, in contrast to DCD, DMP had a stronger inhibitory effect on the nitrification in the two tested soils. In comparison with the treatment without any inhibitor, the soil NH(4+)-N content in the treatment with DMP increased significantly by 149.5%-387.2% at the peak of nitrogen transformation stage, and the soil NO(3-)-N content reduced by 22.3%-55.3%. The inhibitory effects of DCD and DMP in fluvo-aquic soil were both stronger than in meadow-cinnamon soil. In addition, the application of DMP combined with HQ had a significantly synergistic effect on soil nitrogen transformation.

Cite this paper

@article{Liu2014EffectsOD, title={[Effects of different nitrogen regulators on nitrogen transformation in different soil types].}, author={Jian-tao Liu and Jing Xu and Zhi-mei Sun and Shao-xiong Cui and Xue Wang}, journal={Ying yong sheng tai xue bao = The journal of applied ecology}, year={2014}, volume={25 10}, pages={2901-6} }