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化学氮肥中的氮素淋失,是其利用率低的主要原因,急待予以研究解决。本试验是利用在施用铵态氮化肥时合并施用硝化抑制剂,以抑制土壤中亚硝酸细菌的活动,减弱铵态氮(NH_4—N)转化为硝态氮(NO_3—N)的过程,起到降低氮素淋失的作用,提高氮肥利用率,增加作物产量的效果。为了更为通俗易懂,这种硝化抑制剂,通称氮肥增效剂。试验用的氮肥增效剂为国产双氰胺(Dd)和氨唑盐(ATC),试验地选在氮肥施用量较大的市郊水地,试验作物为春油白菜(叶用蔬菜)及春小麦。
Nitrogen leaching in chemical nitrogen fertilizers is the main reason for its low utilization rate, which is urgently needed to be studied and solved. In this experiment, we used the combination of nitrification inhibitors in the application of ammonium nitrogen fertilizers to inhibit the activity of nitrite bacteria in the soil and reduce the conversion of ammonium nitrogen (NH_4-N) to nitrate nitrogen (NO_3-N). To reduce the role of nitrogen leaching to improve nitrogen utilization and increase crop yields. In order to be more easy to understand, this nitrification inhibitor, commonly known as nitrogen fertilizer synergist. The tested nitrogen fertilizers were domestic dicyandiamide (Dd) and azotetrazole (ATC). The test was selected in the suburban waters with large amount of nitrogen fertilizer. The test crops were spring cabbage (leafy vegetables) and spring wheat .