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本文以早夏制杂交早稻种子威优402(V402)、早夏制杂交晚稻种子协优46、早夏繁不育系种子协青早A为材料。分别于不同成熟期(花后10天、15天、20天、25天、28天)取样测定其千粒重、生活力和活力的变化,以确定其适宜收获期。试验结果表明,不育系协青早A种子以花后20～25天收获为其适期,杂交早稻威优402种子以花后20天收获生活力较高,杂交晚稻协优46种子以花后25天收获其发芽势、发芽率、发芽指数、千粒重最高,脱氢酶活性和细胞膜完整性也较好。
In this paper, early summer hybrid rice early weeing Weiyou 402 (V402), early summer hybrid late rice seed Xieyou46, early summer sterile CMS seed Aqingqingzao as material. Changes of 1000-grain weight, viability and vitality were determined at different maturity stages (10 days, 15 days, 20 days, 25 days and 28 days after anthesis) to determine their suitable harvest period. The results showed that CMS-A seeds were harvested at 20-25 days after anthesis, and the F1 hybrid early weeds, Weiyou 402, had higher viability after 20 days of anthesis. After 25 days harvest its germination potential, germination rate, germination index, the highest grain weight, dehydrogenase activity and cell membrane integrity is also better.