影響石灰性土壤氨揮發的一些因子

Some Factors Affecting Ammonia Volatilization from Calcareous Soil

李世清(Shi-Qing Li) ； 李生秀(Sheng-Xiu Li)

《土壤與環境》 2卷3期 (1999/09) Pp. 251-257

https://doi.org/10.30058/SE.199909.0006

摘要

以紅油土為供試土壤，採用“土壤氨揮發瞬間密閉收集法”，在室外對氮肥品種、施肥深度、氮磷混施對氮素揮發的影響進行了研究。試驗表明，不同氮肥品種的氨揮發量不同，揮發量最大的是尿素，次為硫酸銨和碳酸氫銨。施肥深度顯著影響氨揮發，深施到6～12 cm和混施到0～6 cm比表施揮發分別減少27.7%和13.3%，過磷酸鈣和碳酸氫銨混合施用對防止肥料中氨的揮發損失有明顯作用，並隨過磷酸鈣所佔比例增加，效果更加突出。

關鍵字

石灰性土壤 ； 氨揮發 ； 影響因子

並列摘要

A method named as ”instantaneous close collection of ammonia volatilized from soil” was used to study the effects of nitrogen fertilizer forms, applying depth and mixture of N fertilizer and P fertilizer on N loss by volatilization from a manual loessial soil. The results obtained show that the different forms of N fertilizers had different volatilization amount. Urea was the largest in ammonia volatilization followed by ammonium sulphate and ammonium bicarbonate. The placement of fertilizers had great influence on volatilization with N loss being reduced by 27.7% and 13.3%, respectively ,when fertilizers were placed in 6~12 cm and 0~6 cm layer as compared with surface application. The mixture of applying N fertilizer with superphosphate had a significant effect on protecting ammonia volatilization for ammonium bicarbonate and this effect increased with increase of superphosphate ammount in the mixture.

並列關鍵字

calcareous soil ； ammonia volatilization ； factors affecting ammonia volatilization