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上海郊区后季稻栽种面积约占粮田总面积的90%,在粮食生产中占有举足轻重的位置,由于上海地区位于亚热带北缘,三熟制季节很紧,后季稻生育期间的气温变化,对产量具有强烈的影响。近十年来,亩产变动在512～732斤之间,平均612±69.4斤,相对偏差高达11.3%,产量极不稳定。为此,我们就后季稻主要代表品种以及我所育成的品系材料,进行了生育特性的观察研究,以期对掌握关键性栽培措施,促进稳产高产,以及品种选育等方面有所参考。
The area of post-season rice planting in the suburbs of Shanghai accounts for about 90% of the total grain yield and occupies a pivotal position in grain production. Due to the fact that the Shanghai area is located in the northern margin of the subtropics and the season of three-cropping is tight and the temperature during post-season rice growth, Has a strong impact on production. In the past ten years, the change in per mu was between 512 and 732 kilos, with an average of 612 ± 69.4 kilograms, with a relative deviation of 11.3% and a very unstable yield. To this end, we conducted a survey on the reproductive characteristics of the main representative varieties of rice in the later season and the strains of materials that I bred, with a view to mastering the key cultivation measures, promoting stable and high yield, and breeding varieties.