天津市优良早中熟棉花品种筛选、良繁及推广应用成效显著８０年代，天津市棉花品种多乱杂、品种老化、布局不合理、没有品种配套栽培技术及良繁体系。为此，天津市种子管理站主持了天津市优良早、中熟棉花品种筛选、良繁及推广应用研究。从１９９０年起，该站组织了天津市... In the 1980s, many cotton varieties in Tianjin were mixed, the varieties were aged and the layout was not reasonable. There was no variety of cultivation techniques and good propagation system. To this end, Tianjin Seed Management Station presided over the fine early, middle-maturing varieties of cotton screening, good propagation and application of research. Since 1990, the station has organized Tianjin ...