绥江县耕地土壤环境质量分析评价
发布时间：2018-11-25 13:21
【摘要】：【目的】为了解绥江县的土壤环境质量状况,参照《无公害食品蔬菜产地环境条件标准》、《绿色食品产地环境质量标准》以及《有机农业生产基地环境质量标准》,对耕地土壤的重金属元素铅、汞、镉、铬、砷含量以及p H值进行测定分析。【方法】选用单因子污染指数法和常用的Nemero综合污染指数法2种方法,对研究区域的土壤环境质量进行综合评价。【结果】分析结果表明,绥江县的土壤p H值在4.8~7.92,均值为6.48,土壤偏酸;绥江县土壤样品的重金属平均含量分别为铅30.65 mg/kg,镉0.15 mg/kg,汞0.17 mg/kg,砷3.01 mg/kg,铬100.87 mg/kg,均低于《无公害食品蔬菜》(NY-5010-2001)中的标准限值。重金属平均变异程度顺序为砷汞铬铅镉。【结论】综合污染指数法和单项污染指数法的评价结果显示,本研究区域的土壤环境质量尚未监测到重金属污染,达到无公害蔬菜产地和A级绿色食品产地环境的质量要求,但不能满足有机农业产地的生产标准。
[Abstract]:[objective] to understand the soil environmental quality in Suijiang County, referring to the Environmental conditions Standard of Non-Pollutant Food and vegetable production area, the Environmental quality Standard of Green Food producing area and the Environmental quality Standard of Organic Agricultural production Base. The contents of heavy metal elements lead, mercury, cadmium, chromium, arsenic and pH in cultivated soil were determined and analyzed. [methods] single factor pollution index method and Nemero comprehensive pollution index method were used. The comprehensive evaluation of soil environmental quality in the study area was carried out. [results] the results showed that the soil pH value of Suijiang County was 4.80.92, the mean value was 6.48, and the soil was partial acid. The average content of heavy metals in soil samples of Suijiang County was 30.65 mg/kg, CD 0.15 mg/kg, Hg 0.17 mg/kg, as 3.01 mg/kg, Cr 100.87 mg/kg, respectively. All of them were lower than the standard limit value of "pollution-free food vegetables" (NY-5010-2001). The order of variation of heavy metals was arsenic, mercury, chromium, lead, cadmium. [conclusion] the results of comprehensive pollution index method and single pollution index method showed that heavy metal pollution had not been detected in soil environmental quality in this study area. It can meet the quality requirements of pollution-free vegetable producing area and A grade green food producing area, but it can not meet the production standard of organic agriculture producing area.
【作者单位】： 昭通市农业环境保护监测站;
【基金】：云南省农产品质量安全专项(2140129)
【分类号】：S151.9;X825
，
本文编号：2356248
[Abstract]:[objective] to understand the soil environmental quality in Suijiang County, referring to the Environmental conditions Standard of Non-Pollutant Food and vegetable production area, the Environmental quality Standard of Green Food producing area and the Environmental quality Standard of Organic Agricultural production Base. The contents of heavy metal elements lead, mercury, cadmium, chromium, arsenic and pH in cultivated soil were determined and analyzed. [methods] single factor pollution index method and Nemero comprehensive pollution index method were used. The comprehensive evaluation of soil environmental quality in the study area was carried out. [results] the results showed that the soil pH value of Suijiang County was 4.80.92, the mean value was 6.48, and the soil was partial acid. The average content of heavy metals in soil samples of Suijiang County was 30.65 mg/kg, CD 0.15 mg/kg, Hg 0.17 mg/kg, as 3.01 mg/kg, Cr 100.87 mg/kg, respectively. All of them were lower than the standard limit value of "pollution-free food vegetables" (NY-5010-2001). The order of variation of heavy metals was arsenic, mercury, chromium, lead, cadmium. [conclusion] the results of comprehensive pollution index method and single pollution index method showed that heavy metal pollution had not been detected in soil environmental quality in this study area. It can meet the quality requirements of pollution-free vegetable producing area and A grade green food producing area, but it can not meet the production standard of organic agriculture producing area.
【作者单位】： 昭通市农业环境保护监测站;
【基金】：云南省农产品质量安全专项(2140129)
【分类号】：S151.9;X825
，
本文编号：2356248
本文链接：https://www.wllwen.com/kejilunwen/nykj/2356248.html
