Nitrogen losses through denitrification from a grazed pasture as affected by the use of a nitrification inhibitor
Denitrification is an agriculturally important soil process, since it can decrease the availability of mineral N in soil for plants and can therefore cause N use inefficiency and reduce agricultural production.Additionally, nitrous oxide ( N2 O), one of the gaseous products from denitrification,contributes to global warming.Studies have shown that soil denitrification and N2 O emission rates are highly variable, with high rates being associated with animal grazing and high nitrate concentrations in grazed pastures ( Luo et al.2000 ).Nitrification inhibitor, dicyandiamide ( DCD), has been used to inhibit the nitrification process and to reduce nitrate concentrations in soil.As a result of reduced nitrate concentrations, denitrification rates could be reduced.However, there is little information available on effects of DCD use on denitrification rates under grazed pastures.The aim of this study was to determine the effects of the use of DCD on denitrification rates under a grazed pasture.
Denitrification nitrogen losses grazed pastures dicyandiamide (DCD)
W.Suna J.Luo S.Lindsey S.Ledgard
Liaoning Academy of Agricultural Science,Shenyang,P.R.China,110161;Climate,Land and Environment,AgRe Climate,Land and Environment,AgResearch,Private Bag 3123,Hamilton,New Zealand;Corresponding author Climate,Land and Environment,AgResearch,Private Bag 3123,Hamilton,New Zealand
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）