According to the results of assessment, this paper defines the suitable region for developing green farm products in order to fulfill the sustainable development of agriculture, furthermore, this paper provides geochemical datas for certificate upon the green farm land and remediation of water and soil pollution. Based on the result of geo-chemical survey of soil and irrigation water on a scale of 1:50000,this paper evaluated the land environment quali-ty for developing green farm produces depending on the environmental quality standards. The results showed that the single pollution index are less than 1 in most of Zaoqiang county, 99. 66% of investigation region won standard of the soil environmental technical terms for green farm production area, only a few samples′content of heavy metals mainly including mercury and cadmium exceed the standard. 78. 21% of investigation region won standard of the ir-rigation water environmental technical terms for green farm production area, Main indicators exceeding the standard were fluoride and pH. Zaoqiang has the potentiality to develop green farm products, On this basis, we can increase both the added values of farm products and the income of farmers.%[目的]通过开展绿色农产品土地环境评价,圈定适宜发展绿色农产品的土地范围,为农业部门制定相关决策提供科学依据,实现农业的可持续发展;为进一步申请绿色产地认证和局部区域的土、 水环境污染治理提供地球化学依据.[方法]文章基于1:50000土壤和灌溉水地球化学调查结果,依据 《绿色食品产地环境技术条件》(NY/T 391-2000)评价标准,对河北省枣强县开展绿色农产品土地环境评价.[结果]枣强县绝大部分地区单项污染指数小于1,调查区99.66%的面积符合土壤绿色产地要求,仅个别样点表现出超标现象,超标指标主要为汞和镉;78.21%的面积符合灌溉水绿色产地要求,超标指标主要为氟化物和pH.[结论]枣强县具备开发绿色农产品的土地环境潜力,以此为依托,提高农产品附加值,增加农民收入.
展开▼
