Using this technology, the purity problem during seed production in three-line, two-line or chemical-emasculated hybrid rice breeding system could be solved and some new combinations could be bred.
利用这项技术可望解决三系、两系或化学杀雄杂交稻制种过程中出现的纯度问题，且有利于新杂交稻组合的选育。
During seed production in hybrid rice, preharvest sprouting is one of the main restricting factors for yield and quality.
在杂交水稻制种生产上，穗上芽的发生成为制约制种产量和品质的主要因素之一。
The regularity of unfavourable weather and its effect on hybrid rice seed production are introduced, and the corresponding technical countermeasures are pointed out.
介绍了信阳地区灾害性天气发生规律及其对杂交稻制种的影响，并提出了应对措施。
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