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- W2350456462 abstract "Based on the discharge and pollutants of drainage ditch in Qingtongxia Irrigation District at the Yellow River upstream in 2009.Source characteristics of discharge and pollutants in typical drainage ditch were analyzed by combined pollution survey of typical drainage ditch and characteristics of irrigation and drainage in Qingtongxia Irrigation District.Comparative analysis the pollution characteristics of point source pollution and non-point source pollution.The results showed,the monthly mean concentration of salinity,ammonia nitrogen,total phosphorus was 1 124,8.59,0.48mg·L-1,the monthly mean load was 20 896,90.35,5.80 t,respectively in farmland drainage period.The monthly mean concentration of salinity,ammonia nitrogen,total phosphorus was 1 952,18.13,4.15mg·L-1,the monthly mean load was 7 842,67.81,21.38 t in non-farmland drainage period.Meanwhile,the drainage and pollutants in Diyi drainage ditch is mainly composed of irrigation drainage and agricultural non-point source pollution,and the process of drainage and pollutants has a good correspondence with farmland irrigation interval.In contrary,Disan drainage ditch and Yinxin drainage ditch etc,due to irrigation drainage and agricultural non-point source pollutants was drained into,and a large amount of sewage above the standards was drain into,too,the drainage and pollutants showed comprehensive pollution characteristics of point source pollution and agricultural non-point source pollution,which point source pollution was the dominant factors." @default.
- W2350456462 created "2016-06-24" @default.
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- W2350456462 date "2012-01-01" @default.
- W2350456462 modified "2023-09-23" @default.
- W2350456462 title "Source Characteristics Analysis of Discharge and Pollutants in Typical Drainage Ditch of Qingtongxia Irrigation District" @default.
- W2350456462 hasPublicationYear "2012" @default.
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