摘要： 通过多年多点的高产攻关,对不同穗型高产冬小麦产量构成因素进行了研究。结果表明:大穗型品种,栽培的主攻方向是穗重,但其分蘖成穗率低,应适当增加播种量,以获得理想穗数;多穗型品种,栽培的主攻方向是穗多,但其分蘖成穗率高,应适当减少播种量,既要获得足够穗数,又要防止倒伏;中穗型品种,栽培的主攻方向是在穗足的条件下,争取穗重。中穗型品种,取得高产的机率高,因此,超高产育种,应选育中穗型品种。

关键词: 冬小麦, 穗型, 高产

Abstract: Though years survey and investigation of plot test and high yielding cultivation,the yield constituting index was done.The result show that the big spike variety should aim at the spike weight,but its rate of bearing is low,so raising the seeding quality to get the wanted spike number per 666 7 m 2 is the right way;the many spike variety should aim at the spike number,but the rate of bearing is large,so reducing the seeding quality to keep it from get down while getting the wanted number is the right way;the middle spike variety should aim at the spike weight,the middle spike variety has the high proposibility to get high yielding so the breeding of super high yielding should choose the middle spike variety.

Key words: Winter wheat, Spike type, High yielding

中图分类号: 

• S512