扬麦16、宁麦18超高产群体特征及株型指标研究  

The Population Characteristics and the Plant Type Index of Yangmai 16and Ningmai 18under Super-high Yield Conditions

作　　者：朱冬梅[1] 王君婵[1] 高致富[1] 刘培园[2] 

机构地区：[1]江苏里下河地区农业科学研究所,江苏扬州225007 [2]长江大学农学院,湖北荆州434025

出　　处：《金陵科技学院学报》2013年第4期52-56,共5页Journal of Jinling Institute of Technology

基　　金：农业部现代农业产业技术体系建设专项(CARS-3-1-1)

摘　　要：为给本地区超高产小麦品种的选育提供指导依据，对目前江苏淮南地区推广面积最大的小麦品种扬麦16和高产小麦新品种宁麦18（产量达8500 kg/hm2以上）的群体特征及株型指标进行研究。结果表明：高产群体花后干物质积累量与籽粒产量呈极显著正相关；叶面积系数（LAI）于孕穗期最大；叶片长表现为倒二叶＞倒三叶＞旗叶，宽表现为旗叶＞倒二叶＞倒三叶，倒二叶叶面积最大，倒二叶、倒三叶宽与产量呈显著负相关；节间配置为1∶2.5∶3.5∶（5～5.5）∶（8～9）。In order to provide guidance for the selection of cultivars with super-high yield,the population characteristics and the plant type index of Yangmai 1 6 and Ningmai 1 8 are studied with the yield over 8 500 kg/hm2 .The results indicate that the accumulation amount of dry matter after anthesis and grain yield have significantly positive correlation;LAI is the biggest at booting stage;the leaf length is ranked as top 2nd leaf＆gt;top 3nd leaf＆gt;flag leaf;the leaf width is flag leaf＆gt;top 2nd leaf＆gt;top 3nd leaf;the area of top 2nd leaf is the biggest,and the widths of top 2nd leaf and top 3nd leaf and yield have significantly negative correlation;the ra-tio of internodes on the stem is 1∶2.5∶3.5∶（5~5.5）∶（8~9）.

关 键 词：扬麦16 宁麦18 超高产 株型 Yangmai 16 Ningmai 18 

分 类 号：S512.1[农业科学—作物学]