| 群体密度对寒地高淀粉玉米籽粒同化物积累的影响 |
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| 引用本文： | 洪艳华,杨克军,贝丽霞,冯乃杰,韩文革.群体密度对寒地高淀粉玉米籽粒同化物积累的影响[J].内蒙古农业科技,2012(5):16-18. |
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| 作者姓名： | 洪艳华 杨克军 贝丽霞 冯乃杰 韩文革 |
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| 作者单位： | 黑龙江八一农垦大学农学院,黑龙江大庆,163319 |
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| 基金项目： | 黑龙江省教育厅骨干教师资助项目“特用玉米提质增效调控技术体系研究”部分内容;黑龙江八一农垦大学科研启动基金资助(校启2004-02) |
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| 摘 要： | 以高淀粉玉米品种四单19为试验材料,设4.5万株/hm2、6.0万株/hm2、7.5万株/hm2、9.0万株/hm24个水平的密度处理,研究栽培密度对寒地高淀粉玉米籽粒灌浆期同化物转化和积累的影响。结果表明:随着栽培密度的增加,玉米籽粒灌浆过程中淀粉含量的增加与可溶性糖含量的下降趋势相吻合,说明淀粉含量的增加是可溶性糖转化的结果;灌浆期间,游离氨基酸和可溶性蛋白质含量不受种植密度影响;灌浆前期,随密度增加,籽粒中粗脂肪含量有降低趋势,而在灌浆中后期,籽粒中粗脂肪含量随密度增加有升高趋势。
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| 关 键 词： | 高淀粉玉米 群体密度 籽粒 同化物 |
Effect of Population Density on Assimilate Accumulation in High Starch Maize Kernel in Cold Region |
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| Institution: | HONG Yan-hua(College of Agronomy,Heilongjiang Bayi Agricultural University,Daqing 163319,China) |
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| Abstract: | High starch maize hybrid Si-dan 19 was used to investigate the effect of population density(45000,60000,75000,90000plants/hm2) on assimilates accumulation and transformation at grain filling stage in cold region.The results showed that:Increasing of starch contents are similar to decreasing of soluble sugar contents with the increasing of plant density,which indicated that soluble sugar transformed starch.Free amino acid contents and slouble protein contents are unacted on plant density at grain filling stage.At early grain filling stage fat contents decrcased,but at mid-late grain filling stage fat contents increased with the increasing of plant density. |
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| Keywords: | High starch maize Population density Kernel Assimilates accumulation |
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