典型植烟区土壤面源污染负荷分析

探究保山植烟区面源污染排污因子来源和负荷,对农业面源污染治理具有重要意义。本研究对保山植烟区面源污染因子负荷进行了分析。结果表明,2015-2020保山植烟区面源污染源主要为化肥,其次是秸秆废弃物,再次是农村生活,畜禽养殖污染负荷比最小。保山植烟区面源污染的主要污染物是TN 和 TP,其等标污染负荷比分别为30.57％和56.63％,化肥和秸秆造成的总氮和总磷排放量均为腾冲最大,龙陵最小。本研究将为保山植烟区面源污染分类管理和面源污染防治提供科学依据。

The status of non-point source pollution of soil in the typical tobacco-planting area

It is important to control the agricultural non-point source pollution through figuring out the source and load of non-point source pollution of the Baoshan tobacco-planting area. Hence, this research analyzed the load of non-point source pollution of the Baoshan tobacco-planting area. Results showed that, in the years from 2015 to 2020, the main source of non-point source pollution of the Baoshan tobacco-planting area was the chemical fertilizer, the second one was the crop straw, the third one was the rural life, and the last one was the livestock manure. And the main pollutants were the TN and TP, which accounts for 0.57% and 56.63%, respectively. In addition, the maximum and minimum discharge of TN and TP caused by the chemical fertilizer and crop straw was the Tengchong and Longling, respectively. Overall, this study will provide scientific basis to the sort management and preventing of non-point source pollution of the Baoshan tobacco-planting area.