title: [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.
authors: Jian-Tao
authors: JT
authors: Liu
authors: Jing
authors: J
authors: Xu
authors: Zhi-Mei
authors: ZM
authors: Sun
authors: Shao-Xiong
authors: SX
authors: Cui
authors: Xue
authors: X
authors: Wang
mesh_terms: D002681:China; D006146:Guanidines; D006873:Hydroquinones; D058465:Nitrification; D009584:Nitrogen / Q000737:chemistry*; D011720:Pyrazoles; D012987:Soil / Q000737:chemistry*
chemical_list: D006146:Guanidines; D006873:Hydroquinones; D011720:Pyrazoles; D012987:Soil; C027635:3,5-dimethylpyrazole; C004711:dicyandiamido; D009584:Nitrogen; C031927:hydroquinone