It is important to quantitatively characterize biological nitrogen fixation (BNF) of soybean for farmland fertilizer management and non-point source pollution control.

定量描述大豆生物固氮量对于施肥管理以及农业非点源污染控制具有十分重要的意义。

youdao

This model can provide scientific methods for urban water environment programming and non-point source pollution control and management.

该模型可为城市水环境规划、面源控制和管理研究提供科学手段。

youdao

The model was applied to Hanyang District, Wuhan to study urban non-point source pollution control technology, and satisfactory results were achieved.

所建模型已成功地应用于武汉市汉阳地区城市面源污染控制技术研究，获得了满意的结果。

youdao

But today's problem of non-point source pollution is more difficult to control.

CNN: Polluted rivers stain Portland's image