期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2014

40

5

458-462

10.13331/j.cnki.jhau.2014.05.002

国家自然科学基金项目（31371714）；

本校为第一机构

为解决杂交稻组合天优华占制种不安全问题,对天丰A高温复育特性及其杂交组合天优华占制种基地和时段选择进行研究。通过不同生态区分期播种试验,明确母本天丰A的育性特性;利用研制的杂交稻制种基地和时段气象决策系统,通过分析该组合制种“3个安全期”(育性敏感安全期、抽穗扬花安全期、收获成熟安全期)的风险概率,筛选最佳制种地点和时段。结果表明,天丰A高温复育临界温度为27.8 ℃;对全国740个气象站点50年历史气象资料进行分析后的结果表明,在不同地点和时段进行天优华占制种的安全性差异很大,在海南三亚等基地制种比较适宜。2013年在海南三亚制种基地进行天优华占制种,其单产达3 750kg/hm~2...

The fertility transfer character of Tianfeng A and seed production site selection were studied in order to solve the insecurity problem of seed production for Tianyouhuazhan, a hybrid seed combination. A new idea for determining appropriate region and period for seed production was proposed according to the climate data together with the demand of safe-period in seed production. A computer system was utilized to analysis the meteorological dam of 50 years in China. The result indicated that the critical temperature of sterility transfer for Tianfeng A was about 27.8 ~C. It showed the safe prod...