华北平原地区农田硝态盐淋失研究进展

Nitrate Leaching in North China Plain:a Review

综合概括了华北平原地区地下水污染现状和污染特点,对华北平原地区开展的硝酸盐淋失研究成果进行了总结和分析,针对华北平原的水肥管理现状,提出了小麦-玉米两熟农田防止和减少硝态氮淋失的农田管理措施,并指出了下一步硝态氮淋失工作的研究重点。

Nitrate leaching and ground water pollution have become a concern in North China Plain. In this review, the characteristics of the groundwater pollution in North China plain were summarized firstly, then some studies are presented to show the NO3 --N distribution and accumulation in the soil profile under different agriculture management, improper irrigation and fertilizer input caused NO3 --N leaching was also presented. On the basis of those studies the best management practices were listed to prevent the nitrate leaching from the wheat-corn double crop system. It also point out that study of NO3 - N leaching rate, reuse of deep soil NO3 - -N, establishing the NO3- N loss evaluating system should be emphasized in the future.