四川农业大学学报 ›› 1987, Vol. 5 ›› Issue (04): 313-321.doi: 10.16036/j.issn.1000-2650.1987.04.009

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不同播期大麦、小麦、小黑麦产量结构的变异

侯远玉, 杨文钰   

  1. 四川农业大学农学系
  • 收稿日期:1987-07-18 出版日期:1987-12-31 发布日期:2017-04-22

THE EFFECTS OF SEEDING DATES ON YIELD AND ITS COMPONENTS OF BARLEY, WHEAT AND TRITICALE

Hou Yuanyu, Yang Wenyu   

  1. Sichuan Agricultural University, Ya'an, Sichuan, China
  • Received:1987-07-18 Online:1987-12-31 Published:2017-04-22

摘要: 运用方差分析和相关、回归、通径分析的方法分析了不同播期大麦、小麦、小黑麦产量及其构成因素的特点,结果表明,在本试验条件下,播期对不同麦类和不同品种的产量及其构成因素有明显的影响。不同麦类间对产量直接效应最大的因素是亩穗数,不同品种间对产量直接效应最大的因素。早播是穗粒数;晚播是千粒重。在适宜播期范围内,产量高并有它相适宜的产量构成,从而提出不同麦类品种提高单位面积产量的主攻方向。

关键词: 大麦, 小麦, 产量

Abstract: The effects of seeding dates on yield and its components of five cultivars which belong to barley, wheat and triticale respectively were studied by multivariate analysis, correlation analysis and path analysis. The results showed that the yield and its components were significantly influenced by seeding dates and their sensitivity to seeding dates apparently varied with cultivars. The path analysis indicated that the direct effect of number of grain per spike on yield in early-sown plots was maximal and that of 1000-grain weight on yield in later-sown plots was maximal. The way of raising yield for different levels of yield was also discussed.

Key words: BARLEY, WHEAT, YIELD