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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (27): 294-298.

• 植物保护 农药 • 上一篇    下一篇

基于紫外吸收光谱法的吡唑类硝化抑制剂在土壤中的水解研究

史云峰 张丽莉 赵牧秋   

  • 收稿日期:2011-07-07 修回日期:2011-08-08 出版日期:2011-10-25 发布日期:2011-10-25
  • 基金资助:

    国家科技支撑计划重点项目;琼州学院青年教师科研基金项目

The Study of Hydrolyzation of Pyrazole Nitrification Inhibitors in Soil Based on Ultraviolet Absorption Spectra

  • Received:2011-07-07 Revised:2011-08-08 Online:2011-10-25 Published:2011-10-25

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摘要：

为了研究不同形态吡唑类硝化抑制剂施入土壤后的转化过程，本研究以3-甲基吡唑（MP）及其衍生物的紫外吸收光谱为基础，分别研究了1-甲氨酰基-3-甲基吡唑（CMP）、1-羟甲基-3-甲基吡唑（HMP）和3-甲基吡唑磷酸盐（MPP）在土壤中的水解反应。结果表明，CMP、HMP和MPP3种吡唑类硝化抑制剂添加到土壤中后，均会水解为MP，通过甲胺酰化、羟甲基化和中和反应处理吡唑类化合物，只能改变其存在形态和物理特征，并不能提高吡唑类化合物的硝化抑制效果。土壤中存在的能催化C—N键水解的微生物或酶可能会使水解反应加速。

关键词: 辽西半干旱区, 辽西半干旱区, 技术集成模式, 产量, 水分利用效率, 经济效益

Abstract:

In order to study the translation process of pyrazole nitrification inhibitors in different forms applied in soil, based on the determination of ultraviolet absorption spectra of 3-methylpyrazole (MP) and it derivations, the authro studied the hydrolyzation of 1-carboxamide-3-methylpyrazole (CMP), 1-hydroxymethyl-3-methylpyrazole (HMP) and 3-methylpyrazole phosphate (MPP) in soil, respectively. The results showed that three nitrification inhibitors CMP, HMP and MPP, would hydrolyzed to MP when applied to soil. The neutralization and introduction of carboxamide or hydroxymethyl would unchanged the effect of MP, but only changed the form and physical characteristics. The microorganism and enzyme in soil which catalyzed hydrolyzation of C—N might increase the hydrolyzation.

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