摘要
文章以俄罗斯无限结荚习性分枝型大豆品种Лидия和亚有限结荚习性主茎型大豆品种Персона为试验材料,设置25万、40万、55万、70万、85万株/hm2这5个种植密度处理,研究平作条件下不同种植密度对2种不同株型大豆品种农艺性状及产量的影响.结果表明,种植密度显著影响不同株型大豆品种Лидия和Персона的农艺性状及产量,随着种植密度增加均呈现相似变化趋势.其中,株高和底荚高度随种植密度增加呈升高趋势;有效分枝数、主茎节数、单株荚数、单株粒数和百粒重等农艺性状整体上随种植密度增加呈降低趋势;产量随种植密度增加呈先升高后降低趋势.在平作条件下,无限结荚习性分枝型大豆品种Лидия适宜种植密度为55万株/hm2,产量最高可达2.51 t/hm2;亚有限结荚习性主茎型大豆品种Персона适宜种植密度为40万株/hm2,产量最高可达2.47 t/hm2.
Abstract
The article used Russian infinitely podding habit branching soybean variety Лидия and sub-finite podding habit,main stem soybean variety Персона as experimental materials,and five planting densities of 250 000,400 000,550 000,700 000 and 850 000 plants/ha were set to study the effects of different planting densities on the agronomic traits and yield of two different soybean varieties under flat cropping conditions.The results showed that the agronomic traits and yield of different soybean varieties,such as Лидия and Персона,were significantly affected by planting density,and showed similar trends with increasing planting density.Among them,the plant height and bottom pod height showed an increasing trend with the increase of planting density;The number of effective branches,number of main stem nodes,number of pods per plant,number of grains per plant,and hundred grain weight all showed a decreasing trend with increasing planting density;The yield showed a trend of first increasing and then decreasing with the increase of planting density.Under flat cropping conditions,the suitable planting density for the infinitely podding habit branching soybean variety Лидия was 550 000 plants/ha,and the maximum yield could reach 2.51 t/ha;The suitable planting density for the soybean variety Персона with sub-finite podding habit,main stem was 400 000 plants/ha,and the maximum yield could reach 2.47 t/ha.
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