期刊论文

中文

生态环境学报

1674-5906

2005

14

2

218-219

10.16258/j.cnki.1674-5906.2005.02.016

湖南省重点科技攻关项目（02ssy3033）；

本校为第一机构

对长沙市蔬菜生产基地春夏季节3种叶菜类蔬菜硝酸盐含量进行测定并与对应的菜园土壤8个肥力因素进行相关分析.结果表明,叶菜类蔬菜中,以小白菜硝酸盐含量最高,平均含量为3336±1359 mg/kg,污染最严重;所调查的14个样本中超过四级标准达到严重污染水平的占64%以上.叶菜类蔬菜硝酸盐含量与土壤硝酸盐含量呈正相关,其中小白菜和苋菜相应的相关系数和通径分析系数均达5%以上显著水平.土壤硝酸盐含量是影响叶菜类蔬菜硝酸盐含量的主要土壤肥力因素.

The experiment on testing nitrate content of foliage vegetables and soil fertility was conducted in spring-summer season at vegetable base of Changsha, China. The results showed that the content of nitrate in soil was the main fertility factor that influenced the content of nitrate in foliage vegetables. The content of nitrate in Chinese cabbage was the highest and the average was 3 336±1 359 mg/kg (fresh weight) for all the tested foliage vegetables. The ratio that nitrate content exceeded the fourth degree of severe pollution of Chinese stan...