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作 者 ：田佩占

期 刊 ：作物学报 1984年 10卷 03期 页码：173-178

关键词：大豆；

摘 要 ：1980和1982年观察了适于不同条件下种植的9个大豆品种的根系。结果表明,大豆初生根系与后生根系的相对差异是植株对土壤不同层次水分及养分利用的生态适应性状。品种间初生根数及后生根数的差异均较明显,但后生根的差异为初生根的四倍。其干重也有相似变化。根据这些差异可把大豆品种分为初生根型、后生根型和中间型3种类型。

Abstract:The root systems in nine cultivars were observed in 1980 and 1982.The experiment results indicated that the relative differences between pri-mary and secondary root were of ecological significance.Such differen-ces were significant for the obsorption of moisture and in different soildepth.The cultiv

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