肥料结构对红壤氮素淋失的影响及防治措施

Structure of fertilizers on nitrogen leaching losses in red soil and its control measures

肥料结构是影响氮素淋失的重要因素。氮肥进入土壤后,其损失途径主要是氨挥发和反硝化的气态损失。但是,氮肥通过渗漏淋失对地下水(饮用水源)的污染,也不容忽视。为此,综述了近年来3种肥料结构(即单施无机氮肥、无机肥混施、无机肥与有机肥混施)对红壤区稻田土壤氮素淋失的影响的研究进展。

Structure of fertilizers is an important factor which can impact N leaching losses. When nitrogen ferilizer is put into soil, the loss way is maily ammonia volatility and anti-nitrify loss.But underground water pollution which was caused by ammonia leekage shouldn't be neglected.This paper summarizes the research about three different structures of fertilizers-only inorganic nitrogen fertilizer, inorganic fertilizer mixed, organic fertilizer and inorganic fertilizer mixed-on the leaching losses of nitrogen in red rice soil, and presents the measures for avoiding N leaching losses.