农业环境科学学报2013，Vol.32Issue(2)：251-258,8.DOI:10.11654/jaes.2013.02.007
氯甲基吡啶剂型对土壤硝化的抑制效果初步研究
A Preliminary Study on the Inhibitory Effect of Nitrapyrin Formulations on Soil Nitrification
摘要
Abstract
Application of nitrification inhibitors(NIs) is an effective way to reduce nitrate leaching losses and emission of nitrogen oxides, thus to improve nitrogen fertilizer utilization efficiency. An incubation experiment was conducted to investigate the nitrification inhibition effect of nitrapyrins under dark condition in sandy and clayey soils at 25 t. Two nitrapyrin formulations, EC(Emulsifiable Concentrates) and EW( Emulsion in Water), were obtained to study the nitrapyrin effect on nitrification. The results indicated that during 30 days of incubation, both EC and EW had higher nitrification inhibition efficiency in sandy soil than in clayey soil. Nitrification inhibition rates for EC were 55.6%~91.4% in sandy soils and 18.5%~50.9% in clayey soils. Nitrate nitrogen contents decreased significantly with the increase of EC concentration in both sandy and clayey soils. Nitrification inhibition rates for EW were 40.0%~79.0% in sandy soils and 35.7%~53.3% in clayey soils. EW concentration significantly affected the nitrification rate in sandy soils, but not in clayey soils. The optimal EC and EW concentrations for nitrate inhibition were 0.3% of nitrogen rate for both sandy and clayey soils. Under optimal inhibition rate, EC had higher nitrification inhibition efficiency than EW in sandy soil, but the opposite was true in the clayey soils.关键词
氯甲基吡啶/硝化作用/硝化抑制剂/硝化抑制率Key words
nitrapyrin/ nitrification/ nitrification inhibitor/ nitrification rate分类
农业科技引用本文复制引用
顾艳,吴良欢,刘彦伶,张宣,王晢金..氯甲基吡啶剂型对土壤硝化的抑制效果初步研究[J].农业环境科学学报,2013,32(2):251-258,8.基金项目
公益性行业(农业)科研专项(201003016) （农业）
浙江省"三农五方"科研协作计划和浙江大学-浙江奥复托化工有限公司合作项目 （）
