用优质、稻瘟病田间抗性强的日本品种轰早生作母本 ,分蘖力强、繁茂性好、抗稻瘟病的云南楚雄州农科所育成品种楚粳 4号作父本进行杂交 ,从F3 代系统开始 ,同时进行高产、品质、稻瘟病抗性、耐冷性同步鉴定 ,作为选拔的科学依据 ,经 5年 7代选育 ,育成了优质、高产、抗病的新品种合系 30号。 High-quality, rice blast resistance in the field of Japanese breeds B as early as the mother of the mother, tillering ability, lush, good resistance to blast disease Chuxiong Prefecture of Yunnan bred varieties Chujing 4 as the male parent from the F3 At the same time, high-yielding, high-quality, blast resistance and cold tolerance identification were carried out at the same time. As a scientific basis for selection, after breeding for 5 generations and 7 generations, a new variety of high quality, high yield and disease resistance was obtained.