特早熟玉米叶片生长规律探讨  

The Dissicusion on Leaf Growth Speed of Especially Precoclous Corn

作　　者：李卫东[1] 郑建营[1] 侯树金[1] 

机构地区：[1]山西农业大学农学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2008年第3期251-254,共4页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西科技攻关项目(2007031002-15)

摘　　要：对三种植株密度、三种氮肥水平条件下特早熟玉米出叶速度的生长规律进行了研究,结果表明:特早熟玉米出叶速度主要受品种特性影响;三种密度下的出叶速度相差不大;三种氮肥水平下450 kg.hm-2的处理其出叶速度最快。特早熟玉米的出叶速度表现为上部和基部较快,中部较慢。试验表明:6万株.hm-2和450 kg.hm-2的组合是比较合适的组合,有利于特早熟玉米叶片的生长。The speed of leaf growth was studied in the experiment of especially precocious corn in three densities and three nitrogen levels. The results showed that the speeds of leaf growth in the three densities are similar; the speed of leaf growth of 450 kg·hm^-2 is the fastest in the three densities. The order of leaf growth speeds are as follows： basic layer and top leaves are faster, and mid leaves are slowly. plants per hm^2 and 450 kg per hm^2 is the better comtination,The experiment indicated that a density of 60 thousand which is benefitcial to the leaf growth of especially precocious corn.

关 键 词：特旱熟玉米 出叶速度 密度 肥效 

分 类 号：S513[农业科学—作物学]