四川农业大学学报 ›› 1983, Vol. 1 ›› Issue (01): 149-156.doi: 10.16036/j.issn.1000-2650.1983.01.020

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广汉县小麦绵阳11号在不同产量水平下穗数穗重的作用

李跃建   

  1. 四川农学院农学系
  • 出版日期:1983-03-31 发布日期:2017-03-11

EAR NUMBER ANE EAR SIZE PLAY A LEAPING PART IN EIFFERENT LEVEL OF YIELDS IN WHEAT AT GUANG HAN, SICHUAN

Li Yuejian   

  1. Sichuan Agricultural College
  • Online:1983-03-31 Published:2017-03-11

摘要: 小麦亩产量是亩穗数和单穗重的乘积,穗重又由千粒重和穗粒数决定。关于产量因素与产量之间的数量关系、国内外已有许多报道,如张作仿等研究认为(1)(2),穗粒数对产量的影响最大,有效穗次之,粒重最小。Sinha G·C·P。则认为(3),不同品种中,各产量因素对产量作用的大小不同,但似乎倾向于穗粒数和千粒重与产量直接相关。然而,对一个特定的品种,从不同的产量水平上来研究产量因素与产量之间的数量关系的报道尚少见到。本文试图采用二元回归分析和偏相关分析的方法,重点讨论在不同的产量水平下,产量与穗数和穗重的数量变化规律,以便对产量进行预测,并明确不同产量水平下,穗数和穗重的地位,确定继续提高产量的主攻方向。

Abstract: This paper mainly Proved the data of the ear number and the ear size in the different level of yields in ‘Mienyang No.ll’ wheat.
Results indicated that yield was affected by the ear number mainly when the yield per mu was lower than 700 or 700-800 jin per mu.with the number of ears being constant,when the yield was over 800 jin per mu the effect of ear size on yield was greater than the ear number.Therefore to raise the yield in wheat we should chiefly increase the car number when the yield is lower than 700 or 700-800 jin per mu;while,when the yield is over 800 jin per mu we should try to improve ear size mainly.