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１２ 个生育期相近的早稻中的早熟和早中熟水稻品种在１９９６～１９９７ 年７ 月２１ 日至８ 月５ 日每５ 天一次的分期直播试验中生育特征表现出了广泛的差异。根据各品种在４ 个不同播期中的生育与产量表现及所需的有效积温及营养期与全生育期的有效积温比， 可将参试品种分为“强温敏型、灌浆促进型和灌浆迟滞型”三类， 其中灌浆促进型是最适合秋涝减灾的翻秋品种， 它具有当播期推迟时， 全生育期所需的有效积温减少、营养期与全生育期的有效积温比逐渐升高、灌浆期所需的有效积温迅速减少、丰产性与早熟性关系协调等特点。根据各品种随播期推迟而产量迅速下降的特点， 认为即使最适宜的早稻品种翻秋直播最迟不应超过７ 月底。
The characteristics of reproductive performance of early-maturing and early-maturing rice cultivars in 12 early-maturing early-maturing rice showed broad differences in staged live seeding once every 5 days from July 21 to August 5, 1996 to July 5, 1997. According to the fertility and yield performance of each variety in 4 different sowing dates and the required effective accumulated temperature and the effective accumulated temperature ratio during vegetative and full growth stages, the tested varieties can be divided into “strong temperature sensitive type, filling-promoting type and grouting Hysteretic ”three types, of which the promotion of grouting is the most suitable fall autumn varieties, it has a delay when the sowing date, the effective growth of the whole growth period required to reduce the effective period of nutrition and the whole growth period of effective temperature gradually Increased, effective filling temperature required for the rapid reduction of temperature, high yield and premature relationship between the characteristics of coordination. According to the characteristics of various varieties with the delay of sowing and the rapid decline in production, that even the most suitable early autumn varieties of early rice varieties should not be late at the end of July.