一、小麦杂种优势利用的意义世界谷物生产中小麦占有特别重要的位置,据1976年统计,世界麦抪面积达35.6亿亩,约占谷物总面积的1/3左右,总产达8千亿斤。以小麦为食的人口占世界总人口1/2以上。但是,当前小麦的产量比较低(1976年世界平均亩产225斤),不能满足不断增长的 First, the significance of the utilization of wheat heterosis The world cereal production of wheat occupies a particularly important position, according to statistics in 1976, the world McKee area reached 3.56 billion mu, accounting for about 1/3 of the total area of ​​cereal, with a total output of 800 billion jin. The population that feeds on wheat accounts for more than 1/2 of the world total population. However, current wheat production is relatively low (the world average was 225 kg per mu in 1976), unable to meet the growing