【摘 要】
：
以玉米新品种联创808为试验材料,采用随机区组试验,通过设置每公顷6万、7.5万、9万、10.5万、12万株5个种植密度,于2014和2015年在黄淮海地区进行密度多点试验,分别对不同密
【机 构】
：
北京联创种业有限公司,北京,100081
论文部分内容阅读
以玉米新品种联创808为试验材料,采用随机区组试验,通过设置每公顷6万、7.5万、9万、10.5万、12万株5个种植密度,于2014和2015年在黄淮海地区进行密度多点试验,分别对不同密度下产量的差异性以及倒伏情况进行研究,并采用Francis和Kannenberg模型分析法分析不同密度下产量的稳定性.结果表明,2014年试验中,不同密度对产量的影响不显著,密度7.5万、9万株/hm2时产量的变异系数较小,属于高产稳定密度;而2015年不同密度对产量的影响极显著,密度6万、7.5万、9万株/hm2,属于高产稳定密度.密度与两年的平均倒伏率呈极显著正相关,倒伏随着密度的增加而增加.综合考虑品种的丰产性、稳产性以及倒伏发生情况,联创808在黄淮海地区的适宜种植密度为7.5万株/hm2.
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