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2009～2010年,以普通大豆品种九农21为对照,比较了其与高产品种长农13和吉育88的生长动态、主要农艺性状及产量,并对形态指标和产量构成因素进行了典型相关分析。结果表明:高产品种的叶面积指数、地上部生物量、根系指标(根系活力、伤流量、根系体积和干重)、产量以及株高、单株荚重、单株粒重和百粒重等主要农艺性状均高于对照品种,但主茎节数和分枝数低于对照;通过典型相关分析发现,单株粒重与R5期根系体积呈显著正相关,而与R6期叶面积指数呈显著负相关,表明合理调控鼓粒期的群体结构,有助于增产。
From 2009 to 2010, the growth dynamics, major agronomic traits and yield of high-yielding varieties Changnong 13 and Jiyu 88 were compared with that of the common soybean cultivar Jiulong 21, and the morphological traits and yield components were typically correlated analysis. The results showed that the leaf area index, aboveground biomass, root index (root vigor, wound flux, root volume and dry weight), yield, plant height, pod weight per plant, The main agronomic traits were higher than the control varieties, but the number of main stems and branches were lower than that of the control. Through canonical correlation analysis, the grain weight per plant was positively correlated with the root volume of R5 phase. However, Significantly negative correlation, indicating that a reasonable regulation of population structure during the drumming period, contribute to increase production.