摘要
研究施用氮肥对蔬菜设施栽培土壤中硝态氮累积量的影响，结果表明：施氮量对土壤NO3^--N的累积量影响较大，随施氮量的增加，土壤各层硝态氮累积量呈递增趋势。其中对0～1m土层NO3^--N累积的影响尤为突出。设施栽培0-2m土层硝态氮累积总量远远高于相邻粮田，硝态氮的大量累积和高迁移能力对环境所造成的潜在威胁不容忽视。
Effects of Nitrogen dose on nitrate-nitrogen accumulation in soil in protected field were observed. The results indicated that soil nitrate-nitrogen accumulation increased with the increase of the amount of chemical fertilizer nitrogen applied, especially in the 0 - 1 m layer. The nitrate-nitrogen accumulation in 0 - 2 m soll profile was far higher than it in adjacent crop fields. High accumulation and transfered characteristic of nitrate nitrogen in prelected field soil were significantly threaten to environment.
出处
《安徽农业科学》
CAS
北大核心
2007年第1期152-153,共2页
Journal of Anhui Agricultural Sciences
关键词
设施栽培
氮肥用量
硝态氮累积量
Protected cultivation
Nitrogen dose
Nitrate-nitrogen accumulation
