为了选出具有杂交水稻分蘖力强,穗大粒多的特点,又具有早熟、抗病、耐低温特性的水稻新品种(系),我们从1976年开始以三系杂稻为材料进行了系统选育新品种的试验研究。 一、试验依据。三系杂交水稻和常规杂交第一代杂种一样,其后代同样要发生基因分离重组和纯合,这就为利用三系杂交水稻通过系统选育得到较好新品种提供了可能。 In order to select the new rice varieties (lines) with the features of strong tillering ability, spike large grains and early maturing, disease-resistant and low-temperature tolerance of hybrid rice, we systematically selected three-line hybrid rice from 1976 Experimental Study on Breeding New Varieties. First, the test basis. Three-line hybrid rice and conventional first-generation hybrid hybrids, their offspring also have to genetically recombine and homozygous, which for the use of three-line hybrid rice system to obtain better new varieties possible.