昆明迤者小流域农业面源污染物磷的输出规律

The Output Law of Agricultural Non-point pollution P in the Yizhe Small Watershed Area in Kunming

以松华坝上游迤者实验小区为研究对象,在自然降雨条件下,取出7月份的数据对不同土地利用类型磷的浓度进行分析。结果表明,不同土地利用类型对农田污染物输出有较大的影响,总磷流失浓度的规律为土豆和黄豆地>土豆地>裸露地>杂草地>灌木林,耕地的污染物输出浓度较高。

Took Yizhe testing plot of the upstream in Songhua Dam as the study object and runoff concentration of P in different land categories in June were analyzed.The results showed that different land use types had a big effect on the farmland pollutants output.The Law of runoff concentration P was land with potato and soya beanpotato landbare landgrass landshrub land.General speaking,concentration of the farmland pollutants output is higher.