In order to evaluate the current situation of agricultural non-point source pollution prevention and control in Baoji,this paper puts forward effective prevention and control measures.On the basis of a comprehensive quantitative analysis of the spatiotemporal evolution characteristics of pollution in Baoji in the past 10 years,two typical counties of Weibin and Linyou were selected for in-depth investigation and comparative analysis,and the main influencing factors were discussed by using Logistic regression model.The results showed that(1)In the past 10 years,the agricultural non-point source pollution in Baoji mainly originated from the use of pesticides and fertilizers and livestock and poultry breeding.Although the dosa-ges of various types decreased year by year,some counties and districts still showed moderate and severe pollution,among which Mei county was in a state of moderate pollution of pesticides for a long time,Feng county was in a state of moderate pollution of chemical fertilizers since 2015 and continued to be in a state of severe pollution,Weibin district was severely polluted except for 2015,and other counties and districts were in a state of severe pollution of chemical fertilizers from 2012 to 2021.(2)The main agricultural non-point source pollution in Weibin and Linyou came from the use of chemical fertilizers and pesticides,and the intensity of chemical fertilizer and pesticide use in Weibin district was 322.81 kg/hm2 and 12.3 kg/hm2,respectively,which was moderately polluted by chemical fertilizers and severely polluted by pesticides,which was more serious than that of Linyou.(3)Factors such as farmer age,education level,knowledge of agricultural non-point source pollution,pollution prevention and control training,and fertilization standard-ization policy all had a significant impact on farmers'willingness to support agricultural non-point source pollution prevention and control(P＜0.05),among which farmers'age had a significant negative impact on their willingness to support agricultural non-point source pollution prevention and control(regression coef-ficient was-1.396),and the other factors had a significant positive impact.
关键词
农业面源污染/实证分析/防治策略
Key words
Agricultural non-point source pollution/Empirical analysis/Prevention and control strategies
维普
万方数据