春作——两系法杂交水稻早秋制——秋菜栽培模式初探

A Preliminary Study on the Cropping Pattern of "Spring Vegetables——Seed Production of Two-line Hybrid Rice——Autumn Vegetables

阐述了“春作——培两优特青早秋制——秋菜”栽培模式的科学依据和优点，并具体提出了几种主要的搭配模式，探讨了每种模式的适应范围、品种搭配、栽培管理技术，强调了培两优特青早秋制要培育双强亲本、灵活调节花期和综合防治稻粒黑粉病等几个技术环节。

According to the characteristic of thermo-sensitivity in sterility expression of PTGMS lines in two-line hybrid rice seed production, a new cropping pattern, i.e., 'Spring vegetable crops——Two-line hybrid rice seed production——Autumn vegetable crops', was put forward and studied on the basis of the local climatic conditions of Mayang County, Hunan Province. The most important in the new cropping pattern is that favourable climatic conditions are provided for the thermo-sensitive stage and flowering and pollinating stage of the PTGMS line (Pei'ai 64S) of the two-line hybrid rice (Pei'ai 64S/Teqing) seed production, which is necessary to ensure high hybrid seed purity, quality, and yield. The other advantages such as increased economic efficiency, improved soil fertility, and the cultural management of this new pattern were also discussed.