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应用生态学报 ›› 1996, Vol. 7 ›› Issue (1): 103-106.

• 研究论文 • 上一篇    下一篇

化肥种类对不同品种菜心吸收累积Cd的影响

吴启堂, 陈卢, 王广寿, 谭秀芳   

  1. 华南农业大学国土资源与环境科学系, 广州 510642
  • 收稿日期:1994-03-16 修回日期:1995-04-25 出版日期:1996-01-25 发布日期:1996-01-25
  • 基金资助:

    国家自然科学基金资助项目

Effect of chemical fertilizer sources on uptake and accumulation of Cd by Brassica chinensis cultivars

Wu Qiting, Chen Lu, Wang Guangshou, Tan Xiufang   

  1. South China Agricultrual University, Guangzhou 510642
  • Received:1994-03-16 Revised:1995-04-25 Online:1996-01-25 Published:1996-01-25

摘要: 用盆栽试验研究了不同形态N、P、K肥对菜心(Brassica chinensis)吸收Cd的影响以及华南地区多个菜心品种对Cd的吸收累积的差异.结果表明,化肥形态主要影响土壤pH、水溶性和交换性Cd含量.5个品种菜心茎叶Cd浓度高低顺序为:迟菜心2号≥四九菜心19号>迟菜心29号≥特青菜心80天>特青菜心60天.水培试验表明,特青60天单位根表面积吸Cd速率和向地上部的迁移率比迟菜心2号低.

关键词: Cd累积, 菜心, 化肥, 土壤含水量, 侧柏幼树, 短期水分利用效率, 瞬时水分利用效率

Abstract: The effect of defferent forms of N,P and K fertilizers on Cd uptake by Brassica chinensis and the defference betweenthe uptake and accumulation of Cd by the cultivars are studied with pot experiment.The results show that soil pH and conternts of soluble and exchangeable Cd are affected by different forms of chemical fertilizers.Cd content in shoots of five cultivars is in order of Chi-2≥Shijiu-19>Chi-29≥Teqing-80>Teping-60.Hydroponic culture experiment indicates that the uptake rate of Cd by unit root surface and its translocation rate to aboveground parts of Teping-60 are lower thant that of Chi-2.

Key words: Cadmium, Brassica chinensis, Chemical fertilizer, short-term water use efficiency, Platycladus orientalis sapling, soil water content, instantaneous water use efficiency