典型高产大豆品种长农39群体冠层光合生理特性及农艺性状分析
- Title:
- Analysis of Canopy Photosynthetic Physiological and Agronomic Characteristics of Typical High-yield Soybean Variety Changnong 39
- 摘要:
- 为探究高产大豆品种长农39在产量形成重要时期群体冠层光合生理特性及农艺性状情况,以高产大豆品种长农39为材料,以常规大豆品种吉育441和长农35为对照,监测不同大豆品种整个生育期内冠层生理数据,分析高产品种长农39的冠层光合生理特性、农艺性状以及产量构成。结果表明:高产品种长农39在整个生育期内叶绿素含量、叶绿素荧光参数、叶面积指数、净光合速率、群体净光合速率等总体呈现单峰增长趋势,且均高于常规品种吉育441和长农35;在生育后期,高产品种长农39叶片持绿期长,冠层各项生理参数下降速率缓慢,但仍显著高于常规品种吉育441和长农35。综上高产大豆品种长农39在产量形成的重要时期均能保持较高的叶绿素含量和叶面积指数,从而能维持较高的群体光合能力,有利于大豆籽粒光合产物的持续积累,最终获得较高的产量。
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