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田间条件下,以3个亚有限结荚习性大豆品种铁丰31、铁豆63和沈农12为试材,采用再裂区设计,考察不同密度及行距处理对不同大豆品种农艺性状及产量的影响。结果表明:缩小行距可以提高3个大豆品种的株高;增加密度,3个大豆品种的主茎节数、分枝数、单株荚数和单株粒重减少,结荚高度提高;不同行距处理条件下,大豆产量差异达到了极显著水平(P<0.01),行距为30 cm时,大豆产量最高;密度为25万株·hm-2,行距30 cm时,3个大豆品种产量最高,铁丰31、沈农12和铁豆63的产量分别为4 961.2,3 840.0和3 539.1 kg·hm-2。
Field experiments were conducted to investigate the effects of planting density and spacing on agronomic traits and yield of three soybean cultivars, Tiefeng 31, Tiedan 63 and Shennong 12, which were three sub-limited sowing soybean cultivars. influences. The results showed that reducing row spacing could increase the plant height of three soybean cultivars. With increasing density, the number of main stems, branches, pods per plant and grain weight of three soybean cultivars decreased and pod height increased. Under the treatment conditions, the yield of soybean reached an extremely significant level (P <0.01). When the row spacing was 30 cm, the yield of soybean was the highest. When the density was 250 000 hm-2, The yields of Tiefeng 31, Shennong 12 and Tiedang 63 were 4 961.2, 3 840.0 and 3 539.1 kg · hm-2, respectively.