摘要
采用水培试验和土培试验相结合的方法,研究了不同的镁营养水平下3个大豆品种(浙春2号、浙春3号和9703)在两个生育期(五叶期和盛花期)根系活力、叶片叶绿素含量和质膜透性的变化。结果表明,在缺镁胁迫下,大豆根系活力和叶绿素含量显著降低,质膜透性明显升高;适量施镁则能有效提高大豆根系活力和叶绿素含量,并大幅度降低质膜透性。3个大豆品种中,浙春3号对镁最为敏感。
In these experiments, three varieties of soybean were employed as the main material, with the method of water cultural and soil cultural experiments to study the effect of Mg on root activity, chlorophyll content and membrane permeability of three cultivars of soybean. The results showed that the control plants under low Mg exhibited a significant decrease in root activity, chlorophyll content but an obvious increase in membrane permeability. Application of proper Mg raised effectively the root activity and the contents of chlorophyll, while the membrane permeability decreased obviously. ZhechunNO.3 soybean is most sensitive to Mg.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2004年第2期235-239,共5页
Journal of Agro-Environment Science
基金
浙江省教育厅科研基金资助项目(20030713)
关键词
镁
大豆
根系活力
叶绿素含量
膜透性
营养水平
soybean
magnesium (Mg)
root activity
chlorophyll
membrane permeability
