播期、密度及施肥量对牡豆15主要农艺性状和光合特性的影响
- 摘要:
- 为探讨高蛋白大豆品种牡豆15的高效栽培技术，本研究设播期、密度及施肥量3个因素，研究这3个因子对牡豆15的主要农艺性状和光合特性的影响。结果表明：在不同栽培因素条件下，牡豆15产量变化范围为1 958.97~2 851.28 kg·hm-2，最大变化幅度为45.55%；蛋白质含量均值变化范围为42.19%~45.06%，最大变化幅度为6.80%；播期、种植密度和施肥量对气孔导度均有影响，其中播期和施肥量对净光合速率影响较小，种植密度对净光合速率影响较大且低种植密度的净光合速率较高，同时高种植密度有利于提升细胞间CO2浓度、蒸腾速率和叶绿素含量。最高产量栽培方案为4月30日播种，保苗30万株·hm-2，施肥量为350 kg·hm-2，蛋白质含量最高的栽培方案为5月7日播种，保苗30万株·hm-2，施肥量400 kg·hm-2。
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备注/Memo
黑龙江省重点研发计划指导类项目（GZ20210081）；黑龙江省自然基金（SS2021C002）；黑龙江省农业科学院“农业科技创新跨越工程”（HNK2019CX01-7）；黑龙江省“百千万”工程科技重大专项（2019ZX16B01-9）；黑龙江省农业科学院牡丹江分院青年基金（2021002）；黑龙江省农业科学院科技攻关项目（2021YYYF006）。