文档介绍：玉米科学 2012,0( ):3~78
Journalo aze cences
文章编号:005-0906(012)1-0073-06
局部化控对夏玉米冠层结构、光合速率及产量的影响
边大红,张瑞栋,段留生,李建民,李召虎
(中国农业大学农学与生物技术学院农学系/农业部农作制度开放实验室,北京 100193)
摘要:采用局部化控的方式,应用植物生长调节剂玉黄金塑造了玉米“波浪”型冠层结构,并分析玉黄金对冠
层结构、光合速率和产量的影响。结果表明,局部化控处理后化控部分的植株变矮、穗下部节间变短(穗位下降)、
穗上部节间变长、基部节间增粗,玉米群体形成“波式”冠层,群体叶面积指数(LAI)增大且持续时间较长,冠层中下
部透光条件改善,冠层内叶片保持较高净光合速率,单位面积穗数和粒重增加,表现出比对照明显的增产效果。
关键词:夏玉米;局部化控;冠层;光合速率;产量
中图分类号:
文献标识码:A
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