通过对3种密度下大豆根部性状的研究,分析了根部性状问的相关性.试验结果表明:根系宽、根体积、根干重及伤流量在耕层内表现出较明显的规律性,随密度增加而降低;根系宽与根干重、根体积之间,根体积与根干重之间,伤流量与根干重、根体积之间都存在着极显著的正相关,且均能拟合出显著或极显著的回归方程.常规条件下反映大豆根部性状最简单、准确的指标是根干重和根体积.%Soybean root traits under three different densities were analysed . The results show that , root width , root volume, root dry weight and bleeding sap quantity were regular well within plough layer , overall , there's a trend that these root traits reduced with density increased . There were significant positive correlation between root width and root dry weight , roots width and roots volume , roots volume and root dry weight , bleeding sap quantity and root dry weight , bleeding sap quantity and root volume . Root dry weigh and root volume were the most simple and accurate indicators for evaluating root traits .
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