密度对分枝型大豆品种主要农艺性状及产量的影响

Effects of Density on Main Agronomic Characters and Yield of Branching Soybean Variety

根据吉林省引进分枝型大豆的品种特性,研究高肥条件下密度对分枝豆产量和农艺性状的影响,旨在明确分枝型大豆品种高肥条件下最佳种植密度,为该类型品种高产栽培提供理论参考。结果表明,该品种随种植密度的增大,株高逐渐增加,茎粗、分枝数、茎重、粒重、荚重、百粒重逐渐减小;产量呈先增后减趋势,在种植密度5.4万株/hm^2时产量最高(达到2723.5 kg/hm^2),但与当地主推品种吉育86产量相比仍具有较大差距,不适宜在该区域推广种植。

According to the characteristics of branching soybean varieties introduced into Jilin Province,the effects of density on yield and agronomic characters of branching soybean under high fertilizer conditions were studied in order to ascertain the optimal planting density of branching soybean varieties under high fertilizer conditions,so as to provide theoretical reference for high-yield cultivation of this type of soybean variety.The results showed that,with the increase of planting density,the plant height increased,while the stem diameter,branch number,stem weight per plant,seed weight per plant,pod weight per plant and 100-grain weight gradually decreased;the yield showed a trend of increasing first and then decreasing.The yield was the highest when the planting density was 54000 plants/hm^2(up to 2723.5 kg/hm^2),but there was still a large gap compared with the local main variety Jiyu 86,which was not suitable for popularizing planting in this region.