中国农业科学2011，Vol.44Issue(3)：500-506,7.DOI:10.3864/j.ssn.0578-1752.2011.03.009
石灰性土壤中不同硝化抑制剂的抑制效果及其对亚硝态氮累积的影响
Effects of Nitrification Inhibitors on Nitrification Inhibition and Nitrite Accumulation in Calcareous Soil
摘要
Abstract
[Objective] The objective of the study was to determine the influences of four different kinds of nitrification inhibitors, DMPP, DCD, AM and TU, on soil nitrite accumulation, and to select the best nitrification inhibitor for nitrogen fertilizer in calcareous soil. [Method] The contents of ammonium nitrogen, nitrite nitrogen, nitrate nitrogen and pH were measured, and apparent nitrification rate and inhibitory rate of different nitrification inhibitors were calculated. [Result] The results showed that under the experimental conditions (60％ of water hold capacity, 25℃), little nitrite nitrogen was found in the soil treated with nitrification inhibitors DMPP, DCD, and AM, however; while some nitrite nitrogen was found in the TU treatment in the beginning eight days. The nitrification inhibition rate was in the order of 10％DCD ＞ 1％DMPP ＞ 5％AM (depending on the amount of applied pure N). DMPP, DCD and AM treatments induced nitrification process lag behind 35-39 d. [ Conclusion ] DMPP, DCD and AM could significantly inhibit the accumulation of nitrite nitrogen in calcareous soil. The inhibitory effects of DMPP, DCD and AM were evident, while that of TU was not.关键词
硝化押制剂/亚硝态氮/硝化抑制率/3,4-二甲基吡唑磷酸/双氰胺引用本文复制引用
石美,张妹婷,沈锋,梁东丽,党虎玲..石灰性土壤中不同硝化抑制剂的抑制效果及其对亚硝态氮累积的影响[J].中国农业科学,2011,44(3):500-506,7.基金项目
国家科技支撑计划项目(2008BADA4B095)、国家小麦产业技术体系项目 （2008BADA4B095）
