在短时期内育成生产上能应用的新品种,这是育种工作者所期望的。从郊区水稻生产的发展趋势来看,也迫切要求有更好的良种,来代替现有晚稻当家品种。下面我就“嘉农系统”的选育实践,对晚稻育种谈几点看法:(一)首先应当明确水稻选育目标,这是决定选育种工作是否取得成效的问题。我们认为上海郊区水稻育种目标,应以三熟制为主体,选育早、中、晚的配套品种。后季稻应 It is breeder’s expectation that in a short period of time bred new varieties of production can be applied. From the perspective of the development trend of suburban rice production, there is an urgent need for better varieties to replace the existing late rice varieties. In the following, I will talk about the breeding practice of “JiaNong system” and talk about the breeding of late rice: (1) Firstly, the goal of rice breeding should be clearly defined. This is the issue of whether or not the selection and breeding work is effective. We think that the goal of rice breeding in the suburbs of Shanghai should be based on the three-cropping system and breeding early, middle and late supporting varieties. After the season rice should be