耐密型玉米种植密度与产量及其相关性状的关系研究  

Researches on Relationship Between Planting Density and Yield Traits of High Density Tolerance Maize

作　　者：周成[1] 王鹏文[1] 

机构地区：[1]天津农学院农学系,天津300384

出　　处：《天津农学院学报》2011年第4期16-19,共4页Journal of Tianjin Agricultural University

基　　金：天津市科技支撑计划项目"专用玉米新品种选育及其产业化研究"(07ZHNZNC03000)

摘　　要：以耐密型玉米品种郑单958为试验材料,采用单因素随机区组设计,在田间种植条件下,研究了耐密型玉米产量及其性状与种植密度的关系。结果表明,在天津地区,以郑单958为代表的耐密型玉米夏播的最佳密度为4 850株/667 m2。在本文研究密度范围内,玉米的产量随着密度的增大而增加;当密度达到一定程度之后,随着密度的增加,产量反而下降。种植密度对百粒重的影响较明显,其次是影响秃尖长、行粒数、穗粒数,而对穗长、穗粗、穗行数和株高影响不明显。密度增加使百粒重、穗粒数、行粒数成一次线性模式下降,而产量和秃尖长则随密度的增加而呈先减小后增加的二次线性曲线模式变化。In this paper, selecting the high density tolerance maize Zhengdan958 as the test materials, an experimental design with a single factor and randomized blocks was used to study the relationship between the planting density and the yield traits of high density tolerance maize under the field planting conditions. The results indicate that the best summer planting density for high density tolerance maize varieties represented by Zhengdan958 was 4 850 plants/667 m2 in Tianjin. Among the range of planting density in this study, the yield increased with the increase of the planting density, but the yield decreased as the planting density increased when the planting density reached a certain level. Planting density has a very obvious influence on lO0-kemel weight, and then the length of bare ear, grain number per row, grain number per ear. The planting density makes no notable impact on the ear length, the ear diameter, the row number per ear and the height of plant. The planting density increase made lO0-kemel weight, grain number per ear and grain number per row decrease following the linear falling relation, while the yield and length of bare ear decreased firstly and then increased following the quadric parabola equation.

关 键 词：耐密型玉米 夏播 种植密度 产量 产量性状 

分 类 号：S513[农业科学—作物学]