在近60年内,我国油菜生产技术经历了三次大变革。即从20世纪60年代甘蓝型油菜替代白菜型油菜;20世纪90年代双低油菜的育成和推广;20世纪90年代后期以来双低杂交油菜的大面积应用,油菜研 In the past 60 years, China’s rapeseed production technology has undergone three major changes. Namely the replacement of Brassica campestris with Brassica napus in the 1960s; the breeding and popularization of Brassica napus in the 1990s; the large area application of the double low rapeseed since the late 1990s,