氮素调控剂对不同类型土壤氮素转化的影响

应用生态学报

氮素调控剂对不同类型土壤氮素转化的影响

刘建涛^1,2,许靖¹,孙志梅^1**,崔少雄^1,2,王雪^1,2

（¹河北农业大学资源与环境科学学院，河北保定 071001； ^2河北省农田生态环境重点实验室，河北保定 071001）

出版日期:2014-10-18 发布日期:2014-10-18

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

LIU Jian-tao^1,2, XU Jing¹, SUN Zhi-mei¹, CUI Shao-xiong^1,2, WANG Xue^1,2

(¹College of Resource and Environmental Science, Hebei Agricultural University, Baoding 071001, Hebei, China; ^2Hebei Province Key Laboratory for Farmland EcoEnvironment, Baoding 071001, Hebei, China)

Online:2014-10-18 Published:2014-10-18

摘要/Abstract

摘要：

采用室内培养试验方法，比较了硝化抑制剂双氰胺（DCD）和3,5-二甲基吡唑（DMP）对华北平原两种主要土壤类型潮褐土和潮土中氮素转化的调控效果，并进一步研究了DMP与脲酶抑制剂氢醌（HQ）的配合施用对潮土中氮素转化的影响.结果表明：在两种供试类型土壤上DMP对尿素氮的硝化抑制作用均强于DCD.与单施尿素相比，在氮素转化高峰时，DMP可使土壤中NH₄⁺-N含量显著提高149.5%～387.2%，NO₃^--N含量降低22.3%～55.3%；同一抑制剂对潮土中氮素转化的调控效应较潮褐土更为明显；与DMP单施相比，DMP和HQ配施表现出明显的对氮素转化的协同抑制效果.

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 NH₄⁺-N content in the treatment with DMP increased significantly by 149.5%-387.2% at the peak of nitrogen transformation stage, and the soil NO₃^--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.

刘建涛1,2,许靖1,孙志梅1**,崔少雄1,2,王雪1,2. 氮素调控剂对不同类型土壤氮素转化的影响[J]. 应用生态学报.

LIU Jian-tao1,2, XU Jing1, SUN Zhi-mei1, CUI Shao-xiong1,2, WANG Xue1,2. Effects of different nitrogen regulators on nitrogen transformation in different soil types.[J]. Chinese Journal of Applied Ecology.