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Comparative Effectiveness of Four Nitrification Inhibitors for Mitigating Carbon Dioxide and Nitrous Oxide Emissions from Three Different Textured Soils

机译:四种硝化抑制剂对三种不同纹理土壤二氧化碳和氧化亚氮排放的比较效果

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Nitrification inhibitors (NIs) can be used to reduce both NO3?-N leaching and N2O-N emissions. However, the comparative efficacies of NIs can be strongly affected by soil type. Therefore, the efficacies of four nitrification inhibitors (dicyandiamide (DCD), 3, 4-dimethylpyrazole phosphate (DMPP), nitrogenous mineral fertilizers containing the DMPP ammonium stabilizer (ENTEC) and active ingredients: 3.00–3.25% 1, 2, 4-triazole and 1.50–1.65% 3-methylpyrazole (PIADIN)) were investigated in three different textured N-fertilized (0.5 g NH4+-N kg?1 soil) soils of Schleswig-Holstein, namely, Marsch (clayey), ?stliches Hügelland (loamy) and Geest (sandy) under a controlled environment. Total CO2-C and N2O-N emissions were significantly higher from Marsch than ?stliches Hügelland and Geest. In Marsch, DMPP showed the highest inhibitory effect on CO2-C emission (50%), followed by PIADIN (32%) and ENTEC (16%). In ?stliches Hügelland, DCD and PIADIN showed the highest and equal inhibitory effect on CO2-C emission (73%), followed by DMPP (64%) and ENTEC (36%). In Marsch and ?stliches Hügelland, DCD showed the stronger inhibitory effect on N2O-N emission (86% and 47%) than DMPP (56% and 30%) and PIADIN (54% and 16%). In Geest, DMPP was more effective in reducing N2O-N emission (88%) than PIADIN (70%) and DCD (33%). Thus, it can be concluded that DCD is a better NI for clay and loamy soils, while DMPP and PIADIN are better for sandy soils to inhibit soil nitrification and gaseous emissions.
机译:硝化抑制剂(NIS)可用于减少NO3?-N浸出和N2O-N排放。然而,NIS的比较效果可能受土壤类型的强烈影响。因此,四种硝化抑制剂的效果(双氰胺(DCD),3,4-二甲基吡唑磷酸(DMPP),含有DMPP铵稳定剂(Entec)和活性成分的氮矿物肥料:3.00-3.25%1,2,4-三唑在Schleswig-Holstein的三种不同纹理的N-受精(0.5g NH4 + -NK-1土壤)土壤中,研究了1.50-1.65%的3-甲基吡唑(比亚丁)),即Schleswig-Holstein的土壤,即Marsch(Clayey),?StlichesHügelland(植物)在受控环境下的Geest(Sandy)。玛斯彻总共CO2-C和N2O-N的排放量明显高于摩尔斯(STlichesHügelland)和Geest。在Marsch中,DMPP对CO2-C排放(50%)显示出最高的抑制作用,其次是小蛋白(32%)和Entec(16%)。在?STLICHESHÜGELLAND,DCD和PIADIN对CO2-C排放(73%)显示出最高和相同的抑制作用,其次是DMPP(64%)和ENTEC(36%)。在马斯彻和斯特里奇(StlichesHügelland)中,DCD显示比DMPP(56%和30%)和比亚丁(54%和16%)对N 2-N排放(86%和47%)的抑制作用更强。在Geest中,DMPP更有效地减少比小蛋白(70%)和DCD(33%)的N2O-N发射(88%)。因此,可以得出结论,DCD对于粘土和壤土的污垢是更好的NI,而DMPP和PIADIN对于含有土壤硝化和气态排放的DMPP和PIADIN更好。

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