培两优特青制种试验田高产技术经验剖析

Experience in the Techniques of High-yielding Seed Production of Peiliangyou Teqing in Experimental Plots

介绍了培两优特青高产制种试验田产量结构特点，并总结了：合理安排播差期、促进“两峰期”基本吻合；父本采用“超常”措施增加花粉量及提高花粉利用率；培育母本分蘖壮秧；协调母本个体与群体的关系；巧施“九二０”，搞好人工辅助授粉，提高异交结实率；综合防治病虫害等技术经验。

In 1997, a record yield of 4.78 t/hm2 for two-line hybrid rice Peiliangyou Teqing was set in its high-yielding seed production experiment under an area of 0.2 hm2 at Mayang County, Hunan Province. The main technical experiences were: ① achieving a good synchronization of heading and flowering between the male and female parents by well-arranging their seeding interval; ②raising healthy tillered seedlings and increasing transplanted basic seedlings; ③establishing high-yielding population with many and large panicles to achieve sufficient spikelets for the female parent and heavy pollen load for the male parent; ④increasing outcrossing rate by spraying GA3 in a high dosage and supplementarily pollinating with two bamboo rods; ⑤ adopting integrated pest management.