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农学学报

农学学报 ›› 2012, Vol. 2 ›› Issue (3): 6-9.

• 农艺科学 生理生化 • 上一篇    下一篇

种植密度对‘浚单29’产量和品质的影响

王小星 王存纲 张守林 徐国举 卢瑞乾 鹿红卫 章慧玉   

  • 收稿日期:2011-09-02 修回日期:2011-10-30 出版日期:2012-03-20 发布日期:2012-03-20
  • 基金资助:

    国家农业科技成果转化资金项目——高产优质高抗玉米新品种浚单29综合配套技术研究与示范

Effects of Planting Density on Yield and Quality of ‘Xundan 29’

  • Received:2011-09-02 Revised:2011-10-30 Online:2012-03-20 Published:2012-03-20

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摘要：

为了协调玉米产量与子粒品质的关系，采用最新通过国家审定的玉米新品种‘浚单29’，通过设置5.25万株/hm2~9.00万株/hm2共6个种植密度，研究了玉米子粒产量和品质随种植密度的变化规律。结果表明，‘浚单29’的产量潜力大，适宜种植密度范围宽，在5.52万株/hm2~8.70万株/hm2密度范围内，均有11155.4 kg/hm2以上的产量潜力。随着种植密度的增加，‘浚单29’籽粒的蛋白质、粗脂肪含量呈下降趋势，淀粉含量呈上升趋势，赖氨酸含量则呈波动变化。综合考虑，‘浚单29’的种植密度以5.52万株/hm2~6.75万株/hm2为宜。

关键词: 桑树, 桑树, 杂交后代, 桑叶品质, 遗传特性

Abstract:

Field experiments were conducted to study the effect of six different planting densities on yield and quality of ‘Xundan 29’. The results showed that, ‘Xundan 29’ have higher yield potential and wider optimal density. It could yield more than 11155.4 kg/hm2 with 5.52×104-8.70×104 plant/hm2. With the increasing of planting density, the content of protein and crude fat of ‘Xundan 29’ decreased and starch content was increased, while the lysine content fluctuated. The plant density of ‘Xundan 29’ was less than 6.75×104 plants/hm2 based on comprehensive consideration. Based on the above, the optimal planting densities was 5.52×104-6.75×104 plant/hm2.