期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2004

30

4

374-377

10.3321/j.issn:1007-1032.2004.04.021

湖南省重点科技攻关项目（02SSY3033）；

本校为第一机构

为系统了解露天蔬菜基地蔬菜-土壤-地下水硝酸盐污染状况,科学指导蔬菜生产,保护生态环境,通过田间采样方法,对长沙市郊东岸乡一露天蔬菜生产基地的蔬菜、土壤和地下水中的硝酸盐含量进行了测定分析.结果表明,所调查的6类蔬菜108个样品中,硝酸盐的含量以菜薹类最高,平均含量为2 924 mg/kg;其次是绿叶类和白菜类,平均含量为2 227 mg/kg;而瓜类、豆类、茄果类最低,平均含量为480 mg/kg.蔬菜硝酸盐污染达严重至高度污染水平的超标率,菜薹类、白菜类和空心菜等绿叶类蔬菜分别为34%～100%,23%～46%,25%～57%;而瓜类、豆类、茄果类硝酸盐污染较轻,达轻度污染水平的仪占50%;空心菜、小白菜和苋菜硝酸盐...

The contents of nitrate in the vegetables-soils-groundwater system were investigated at Dongan area of Changsha suburban.The results indicated that the order of the nitrate average contents was flowering Chinese cabbage (2 924 mg/kg)>green leaf vegetables and Chinese cabbage(2 227 mg/kg)>gourd vegetables, bean vegetables and solanaceous fruits(480 mg/kg) in 108 samples of 6 kinds of vegetables.The degree of nitrate pollution was up to serious (NO3-3 100 mg/kg)or high(NO3-1 440 mg/kg) for 34%~100% flowering Chinese cabbage,23%~46% Chinese cabbag...