中国水稻科学

中国水稻科学 ›› 2013, Vol. 27 ›› Issue (3): 273-279.DOI: 10.3969/j.issn.10017216.2013.03.007

• 研究报告 • 上一篇    下一篇

砷胁迫下磷用量对不同磷效率水稻苗生长、磷和砷吸收的影响

连娟,郭再华*,贺立源   

  1. 华中农业大学 资源与环境学院， 湖北 武汉 430070；
  • 收稿日期:2012-09-17 修回日期:2013-12-21 出版日期:2013-05-10 发布日期:2013-05-10
  • 通讯作者: 郭再华*,
  • 基金资助:

    国家自然科学基金资助项目（40701076）；中央高校基本科研业务费专项资金资助项目（2011PY110）。

Effect of Different P Levels on the Growth, P and As Absorption of Different Pefficiency Rice Varieties under As Stress Conditions at Seedling Stage

LIAN  Juan, GUO  Zaihua*, HE  Liyuan   

  1. Resource and Environment College, Huazhong Agricultural University, Wuhan 430070, China;
  • Received:2012-09-17 Revised:2013-12-21 Online:2013-05-10 Published:2013-05-10
  • Contact: GUO Zaihua*,

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摘要： 通过盆栽试验研究了苗期砷胁迫下磷用量对磷高效水稻99011和磷低效水稻99056生长以及对P、As吸收的影响。试验设3个磷水平（0、30、150 mg/kg）和5个砷水平（0、25、50、100、200 mg/kg）。结果表明，苗期施砷显著增加了两个水稻品种地上部及地下部砷的含量，降低了两个水稻品种的株高、分蘖数、地上部及地下部干质量；施磷不但促进了两个水稻品种的生长，而且还增加了根系对砷的吸收量。当土壤砷浓度为25 mg/kg和50 mg/kg时，施用30 mg/kg磷抑制了两个水稻品种砷向地上部的转移，但施用150 mg/kg磷却促进了砷向地上部的转移。相同的处理，磷高效水稻99011地上部干质量和根干质量均显著高于磷低效水稻99056。施砷后，在30 mg/kg磷水平上磷低效水稻99056的砷转移系数最低。

关键词: 磷, 砷, 水稻, 砷转移系数

Abstract: A pot trial was conducted to clarify the effect of different phosphorus (P) levels on the growth, P and arsenic (As) absorption of Pefficient rice 99011 and Pinefficient rice 99056 under As stress conditions. P was applied at three rates (0, 30 and 150 mg/kg) and As at five rates (0, 25, 50, 100 and 200 mg/kg) in soil.  Results showed that application of As increased shoot and root As concentration and decreased plant height, tiller number, shoot and root dry weight of the two rice varieties.  Application of P increased the growth as well as the root As concentration of the two rice varieties.  At 25 mg/kg and 50 mg/kg of As in soil, application of 30 mg/kg P decreased the translocation of As from roots to shoots and application of 150 mg/kg P increased the translocation of As from roots to shoots of the two rice varieties.  Under the same treatment, shoot and root dry weight of Pefficient rice 99011 were significantly higher than those of Pinefficient rice 99056.  Under the As treatment, the translocation factor of As in Pinefficient rice 99056 minimized at 30 mg/kg P treatment.

Key words: phosphorus, arsenic, rice, arsenic translocation factor

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