湖南省浏阳市砂梨绿色果品生产基地环境评价

Environmental guality evaluation on green fruit production bases of the sand pear in Liuyang City,Hunan Province

湖南省浏阳市大围山镇和中和镇绿色果品梨基地的土壤、灌溉水、大气质量的监测和评价结果表明:浏阳市大围山等地梨生产基地的7项土壤质量指标、9项灌溉水质量指标、4项大气质量指标和27项果品质量指标均符合国家《绿色食品梨产地环境条件》限制指标,产地环境条件完全能够满足绿色果品梨的生产要求;但镉、砷和挥发酚有可能成为绿色果品梨生产基地的土壤、灌溉水和大气的未来主要污染物。针对目前梨园现状,提出果园种草,增加植被覆盖,禁止果园使用砷制剂等措施,以降低土壤中镉、砷含量和大气悬浮物的含量。

The results of environmental monitoring and evaluation of soil,irrigation water and air in the pear production bases of Daweishan Town and Zhonghe Town in Liuyang City,Hunan Province showed that the 7 indexes of soil quality,9 indexes of irrigation water quality,4 indexes of air quality,and 27 indexes of fruit quality reached the standards set by the government regulation policy for production of ＂green pear＂.The environmental conditions of the production bases completely fulfill the requirements for production of green fruit pears.However,cadmium,arsenic and volatile phenol may become the main pollutants in soil,irrigating water,and air in the pear production bases in the following years.Based on the current situation of the pear production bases,we propose to decrease cadmium and arsenic in the soils as well as suspending particles in the air by planting grasses,increasing vegetative coverage,and forbidding the use of arsenic preparation.