發(fā)布時間：2018-11-25 13:21

【摘要】：【目的】為了解綏江縣的土壤環(huán)境質(zhì)量狀況,參照《無公害食品蔬菜產(chǎn)地環(huán)境條件標(biāo)準(zhǔn)》、《綠色食品產(chǎn)地環(huán)境質(zhì)量標(biāo)準(zhǔn)》以及《有機農(nóng)業(yè)生產(chǎn)基地環(huán)境質(zhì)量標(biāo)準(zhǔn)》,對耕地土壤的重金屬元素鉛、汞、鎘、鉻、砷含量以及p H值進(jìn)行測定分析。【方法】選用單因子污染指數(shù)法和常用的Nemero綜合污染指數(shù)法2種方法,對研究區(qū)域的土壤環(huán)境質(zhì)量進(jìn)行綜合評價。【結(jié)果】分析結(jié)果表明,綏江縣的土壤p H值在4.8~7.92,均值為6.48,土壤偏酸;綏江縣土壤樣品的重金屬平均含量分別為鉛30.65 mg/kg,鎘0.15 mg/kg,汞0.17 mg/kg,砷3.01 mg/kg,鉻100.87 mg/kg,均低于《無公害食品蔬菜》(NY-5010-2001)中的標(biāo)準(zhǔn)限值。重金屬平均變異程度順序為砷汞鉻鉛鎘�！窘Y(jié)論】綜合污染指數(shù)法和單項污染指數(shù)法的評價結(jié)果顯示,本研究區(qū)域的土壤環(huán)境質(zhì)量尚未監(jiān)測到重金屬污染,達(dá)到無公害蔬菜產(chǎn)地和A級綠色食品產(chǎn)地環(huán)境的質(zhì)量要求,但不能滿足有機農(nóng)業(yè)產(chǎn)地的生產(chǎn)標(biāo)準(zhǔn)。
[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.
【作者單位】： 昭通市農(nóng)業(yè)環(huán)境保護(hù)監(jiān)測站;
【基金】：云南省農(nóng)產(chǎn)品質(zhì)量安全專項(2140129)
【分類號】：S151.9;X825
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本文編號：2356248