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三种硝化抑制剂在石灰性土壤中的应用效果比较
引用本文:刘 涛,梁永超,褚贵新,马 丹,刘 倩,王 健.三种硝化抑制剂在石灰性土壤中的应用效果比较[J].土壤,2011,43(5):758-762.
作者姓名:刘 涛  梁永超  褚贵新  马 丹  刘 倩  王 健
作者单位:1. 新疆生产建设兵团绿洲生态农业重点实验室,石河子大学农学院,新疆石河子 832000
2. 新疆生产建设兵团绿洲生态农业重点实验室,石河子大学农学院,新疆石河子 832000;农业部作物营养与施肥重点实验室,中国农业科学院农业资源与农业区划研究所,北京 100081
3. 新疆生产建设兵团绿洲生态农业重点实验室,石河子大学农学院,新疆石河子 832000;石河子大学农学院资环系,新疆石河子 832000
4. 石河子大学农学院资环系,新疆石河子,832000
基金项目:教育部高等学校科技创新工程重大项目培育资金项目(V200704)和企业横向项目共同资助
摘    要:在人工气候室内采用25℃黑暗培养法研究双氰胺(DCD)、3,4-二甲基吡唑磷酸(DMPP)及2-氯-6-三氯甲基吡啶(Nitrapyrin)在石灰性土壤中的硝化抑制效果。结果表明:施用DCD、DMPP、Nitrapyrin的土壤NH4+-N含量较单施硫酸铵的土壤(对照)分别提高228.45~244.85 mg/kg(砂土)、209.75~254.79 mg/kg(黏土),NO3--N含量较对照分别降低93.85%~94.99%(砂土)、91.82%~95.38%(黏土)。表观硝化率随培养进程增加缓慢,培养期间只增加了1.28%~2.09%(砂土)、2.72%~8.40%(黏土),而对照增加了86.00%(砂土)、80.89%(黏土)。3种硝化抑制剂均显著抑制了石灰性土壤中硫酸铵水解铵硝化作用的进行,并且在砂土中的硝化抑制率高于黏土,硝化抑制效果最好的为DMPP处理,0.54%Nitrapyrin处理次之但用量最小,0.27%Nitrapyrin和10.8%DCD处理抑制效果相对较弱。

关 键 词:硝化抑制剂  石灰性土壤  矿化氮  表观硝化率  硝化抑制率

Effect comparison of three different types of nitrification inhibitors (DCD, DMPP and Nitrapyrin) in calcareous soils
LIU Tao,LIANG Yong-chao,CHU Gui-xin,MA Dan,LIU Qian,WANG Jian.Effect comparison of three different types of nitrification inhibitors (DCD, DMPP and Nitrapyrin) in calcareous soils[J].Soils,2011,43(5):758-762.
Authors:LIU Tao  LIANG Yong-chao  CHU Gui-xin  MA Dan  LIU Qian  WANG Jian
Institution:Key Laboratory of Oasis Eco-agriculture of Xinjiang Production and Construction Croup, Agronomy College, Shihezi University
Abstract:Nitrification inhibitors can increase N fertilizer use efficiency and decrease the potential N pollution.Incubation experiment was conducted in sandy and clay calcareous soils incubated in growth chamber at 25°C in dark condition in order to compare the effect of three different types of nitrification inhibitors(NI),namely,dicyandiamide(DCD),3,4-dimethylpyrazole phosphate(DMPP) and Nitrapyrin on(NH4)2SO4 nitrification inhabitation.During 30 days incubation tine,an obvious nitrification inhibitions were observed after nitrification inhibitors applied,soil NH4+-N contents were improved by 228.45-244.85 mg/kg and 209.75 – 254.79 mg/kg in sandy and clay soil respectively,while soil NO3——N contents were reduced by 93.85%-94.99% and 91.82%-95.38% in sandy soil and clay soil respectively.Significant nitrifications were occurred,soil apparent nitrification rates under control condition(CK) were increased by 86.00% and 80.89% while were only improved by 1.28%-2.09% and 2.72%-8.40% in sandy soil and clay soil respectively after nitrification inhibitors added.From above results the conclusion can be made that DCD,DMPP and Nitrapyrin all three nitrification inhibitors exert an obviously nitrification inhibition effect,nitrification rate in sandy soil were higher than that in clay soil,the order of inhibition effects were as follow: DMPP>Nitrapyrin>DCD.
Keywords:Nitrification inhibitor  Calcareous soil  Mineral N  Nitrification rate  Nitrification inhibition rate
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