摘要
以栽培措施→群体结构→株型→产量为主线，分析每公顷产量在７５００ｋｇ以上扬麦１５８株型与产量的关系，构建出小麦高产株型的茎型、叶型指标体系为：①节间长度配比为１∶２∶（３～３５）∶５∶（９～１０），穗下节间长度占节间总长度比例＞４５％；②上层叶片宽度、厚度（比叶重）显著增加，剑叶面积显著增大，叶基角和披垂度显著减小；③孕穗期开花期最大叶面积密度的出现高度为植株相对高度的０６１～０．６４．
The relationship between plant type and yield and the effects of cultivation techniques were investigated in wheat ( Triticum aestivum , L. cv. Yangmai 158), and the characteristics of leaf type and stem type of high yield in wheat were pointed out. The optimal length ratio of 5 internodes was 1∶2∶(3～3.5)∶5∶(9～10) from the base internode, and the ratio of the length of upper internode to total length of 5 internodes was more than 0.45. The width and thickness (specific leaf weight) of upper three leaves, the flag leaf area of high yield plant type were great, and the basic angle of leaf and the drooping angle were obviously lower than those of low yield one. The maximal leaf area density at booting stage and anthesis appeared at 0.61～0.64 of the relative plant height.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
1998年第4期24-30,共7页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省应用基础研究项目
