粳型光敏核不育系N5088S高产稳产繁殖技术研究

Reproductive techniques with high and stable yield of Japonica photo sensitive genic male sterile line N5088S

通过分析Ｎ５０８８Ｓ在同年短日不同温度下育性与温度的关系，不同年份秋繁自然结实率、产量与温度的关系及Ｎ５０８８Ｓ１９９６年秋繁分期播种试验结果，提出Ｎ５０８８Ｓ繁殖育性敏感期最适温度范围为２２～２６℃，最佳播期为７月１０日，同时配套其他各项措施可确保Ｎ５０８８Ｓ繁殖获得高产稳产。也可采用冷灌繁殖，其播期可适当提前到６月底至７月初。

In this paper, it had been analysed that the correlation between fertility of N5088S under short day with different temperature and temperature in the same year, the correlation between natural spikelet fertility, reproductive yield and temperature of fertility thermo sensitive period in different years, and results of reproductive experiment of N5088S sowing in different times. The authors had put forward that the best temperature range of fertility thermo sensitive period in N5088S reproduction should be from 22℃ to 26℃, the best sowing time should be July 10, meanwhile other necessary measure should be adopted in order to win high and stable yield. The reproduction with cold water irrigation could be used also, the sowing time of that should be moved up to the end of June and early in July.