期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：2
页码：022040
DOI：10.1088/1755-1315/199/2/022040
语种：English
出版社：IOP Publishing
摘要：An experiment was conducted to research the non-point source pollutant of field in qingtongxia irrigation area, and its variation features was also analyzed. The results showed that the rate of pollutants' concentration in water of the paddy field during the crop growing season was in the order of salinity, in agricultural ditch of the paddy field which is in the order of salinity, and in agricultural ditch of the dry field which is in the order of . The salinity concentration in field changes greatly. The content and loss quantity of TP are rarely small. The nitrogen loss is mainly . The variation process of pollutants' concentration in field was closely related to fertilization, irrigation process, the crop growing season and so on.
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