在甘肃中部沿黄灌区，选用22个大豆品种(系)，在早熟马铃薯套作大豆的模式下，研究了各品种(系)主要农艺性状与产量之间的关系。相关性分析表明，大豆产量与主茎节数、有效分枝数、有效荚数和单株粒数呈极显著正相关。通径分析表明，单株粒数对产量贡献最大，其次是百粒重和有效荚数。通过聚类分析，供试材料可分为4个类群，选用Ⅱ类最适宜。

The 22 soybean vareties(lines) was adopted to investigate the correlation between the main agronomic characters and yield under pototo intercropping soybean patterns in Gansu Irrigation Districts along Yellow River . The results indicated that the yield had significant correlation with the number of main stem， the number of efficient branch， the number of efficient pod， and the number of seed per plant . The path coefficient analysis showed that the number seed per plant contributed to yield mostly， then was 100-seed weight and the number efficient pod . Through cluster analysis， the results indicated that the materials could be classified into 4 groups， each group had its obvious features and theⅡgroup is suitable for early potato intercropping soybean condition .

S682.2

现代农业产业技术体系-镇原大豆综合试验站(nycytx-004)