浙江农业学报

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不同种植模式下蔬菜吸收积累镉的差异

  

  1. (1 华中农业大学 资源与环境学院/农业部长江中下游耕地保育重点实验室,湖北 武汉 430070; 2 新型肥料湖北省工程实验室, 湖北 武汉 430070)
  • 出版日期:2015-08-25 发布日期:2015-08-21

Difference of cadmium uptake and accumulation in vegetables under different planting patterns#br#

  1. (1 College of Resources and Environment/Key Laboratory of Arable Land Conservation in Middle and Lower Reaches of Yangtze River, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China; 2 Hubei Provincial Engineering Laboratory for New\|type Fertilizer, Wuhan 430070, China)
  • Online:2015-08-25 Published:2015-08-21

摘要: 为研究不同种植模式下蔬菜对镉(Cd)的吸收积累差异,在湖北大冶Cd污染土壤上开展田间试验。结果表明,“白萝卜—番茄—青萝卜”种植模式下,蔬菜的可食部位Cd含量、超标倍数、Cd累积量均显著低于其他模式,且该模式下蔬菜的产量和经济效益均为各模式中最高;此外,在该种植模式下,蔬菜非可食部位Cd累积量仅低于“白萝卜—豇豆—空心菜—红菜薹”种植模式,显著高于其他种植模式。各种植模式下,叶菜类蔬菜Cd含量整体较高,豇豆、番茄、红菜薹等非叶菜类蔬菜Cd含量整体较低。综上,在Cd轻度污染菜地进行蔬菜种植,推荐采用“白萝卜—番茄—青萝卜”种植模式,且以豇豆、番茄、红菜薹等非叶菜类蔬菜为宜。

关键词: 蔬菜, 种植模式, 镉, 吸收, 积累

Abstract: To investigate the differences of cadmium uptake and accumulation in vegetables under different planting patterns, field experiment was carried out with Cd contaminated soil in Daye, Hubei Province. It was shown that Cd contents and accumulations in edible parts of vegetables under the planting pattern of “white turnip\|tomato\|green turnip” were lower than those in vegetable under other planting patterns. In addition, the yields and economic benefits of “white turnip\|tomato\|green turnip” pattern were the highest of all the planting patterns. Meanwhile, Cd accumulation in non\|edible parts of vegetables was higher than that under other planting patterns, except the planting pattern of “white radish\|cowpea\|water spinach\|flower Chinese cabbage”. For all planting patterns, Cd concentrations were higher in leaf vegetables than that in cowpea, tomato and flower Chinese cabbage. According to the above results, the planting pattern “white turnip\|tomato\|green turnip” was recommended for Cd polluted soil, and cowpea, tomato and flower Chinese cabbage were the recommend vegetables.

Key words: vegetable, planting pattern, cadmium, uptake, accumulation