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本文总结了天津地区的两系杂交稻制种技术，关键在于合理确定适宜的父母本播差期的前提下，根据亲本发育特点，采用“时空”构成技术， 水肥调控，“九二０”调节等多项综合措施，达到花期相遇，花时集中，从而达到提高制种产量的目的。提出了“超前群体”、“包颈利用”调节花期相遇的技术途径。
This paper summarizes the two-line hybrid rice seed production technology in Tianjin, the key is to reasonably determine the appropriate parents of the sowing the broadcast under the premise of the parental development based on the characteristics of the use of “space-time” composition technology, water and fertilizer regulation, And many other comprehensive measures to achieve flowering encounter, spend time concentrated, so as to achieve the purpose of raising seed production. Put forward the “advance group”, “package neck utilization” to meet the flowering of the technical approach.