摘要
应用大型原状土柱渗漏计研究稻田中N渗漏损失的基本规律及其机制,初步探明硝态氮淋失是稻田土壤中N淋失的重要形式之一,双季稻种植期间的硝态氮淋失量可达20kg·ha-1,N肥用量及品种对N淋失有明显影响。
Studies on the regularity and mechanism of leaching loss of nitrogen in rice field show thatNO,-N leaching is the main loss of nitrogen leached from rice field, which reaches to 20kg N' ha-l during the planting of double-harvest rice. The sort of nitrogen fertilizer andits application rate have a strong effect on the leaching loss of nitrogen. It's suggestedthat the application rate of fertilizer N should be less than 150kg· ha-1 for each croppingof rice.
出处
《应用生态学报》
CAS
CSCD
1995年第S1期62-66,共5页
Chinese Journal of Applied Ecology
基金
浙江省自然科学基金
关键词
氮素
硝态氮
铵态氮
淋失
Nitrogen, Nitric nitrogen, Ammoniacal nitrogen, Leaching loss.