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一、前言 我省油菜生产上,长期是以生产田兼种子田或以商品菜籽作种用。由于油菜是异交率高的作物,种子又细圆,容易发生生物混杂和机械混杂。因而,生产上油菜品种“多、乱、杂”,种子混杂退化现象比较普遍。根据油菜繁殖系数大,用种量小的特点,我们于1976—1982年(收获年)开展了以县为单位的油菜生产用种子的繁殖及其相应配套技术的研究,以期最大限度地发挥良种的增产作用,为建立油菜良种繁殖新体系和技术改革提供科学依据,促进油菜种子工作现代化。
First, the introduction of rapeseed production in our province, the long-term production field and seed fields or rapeseed for commercial use. Because rape is a crop with high rates of outcrossing, the seeds are round and round, prone to biological hybrids and mechanical hybrids. Therefore, the production of rapeseed varieties “more chaos, miscellaneous”, the phenomenon of mixed degenerative seeds is more common. According to the large coefficient of rapeseed breeding, with a small amount of characteristics, we carried out in 1976-1982 (harvest year) of rapeseed production in counties breeding and its corresponding supporting technology research, in order to maximize the seeds And provide a scientific basis for the establishment of a new system of rape breed breeding and technical reform so as to promote the modernization of rapeseed seed work.