一、亚麻应用杂种优势的重要性目前,杂种优势已在多种作物上广泛应用并取得明显效果,推动了农业生产的发展。我国于1964年开始杂交水稻利用的研究,1973年达到“三系”配套,首先在世界上将杂交水稻应用于生产,一般比常规种增产20%左右。在东南亚及美国甚至增产30～ I. The Importance of Heterosis for Flax Application At present, the heterosis has been widely used on many kinds of crops and has achieved remarkable results, which has promoted the development of agricultural production. In 1964, China began to study the utilization of hybrid rice. In 1973, it reached the “three lines” package. First of all, the hybrid rice was used in the world to produce, and the yield was generally increased by 20% or so than that of conventional species. In Southeast Asia and the United States even increased 30 ~