采用杂交、激光照射、轮回选择的育种方法选育吉粳88近等基因系,经过亲缘关系分析、抗稻瘟病性鉴定、稻米品质检验、产量性状分析筛选出性状稳定、抗性比吉粳88明显增强的近等基因系11份进行配组试验示范。结果表明,近等基因系组合种植确能有效降低稻瘟病的危害,达到稳产增收的目的,有利于延长超级稻的推广应用年限,充分发挥超级稻的增产潜力,保持水稻单产水平。 The japonica 88 near-isogenic lines were selected by cross breeding, laser irradiation and cycle selection. The characters of the japonica 88 isolates were determined by genetic analysis, blast resistance identification, rice quality test and yield traits. Significantly enhanced near isogenic lines 11 were tested with a group of experiments. The results showed that the combination of near-isogenic lines could effectively reduce the harm of rice blast and reach the goal of stable yield and increase income, which could help to extend the application and duration of super rice, give full play to the yield potential of super rice and maintain the yield of rice.