甘兰型油菜(B.napus)品种间杂种优势十分显著,据我们研究(1978),杂种在株高、主茎节数、一次分枝数、单株角果数,每果粒数、千粒重以及每亩产量和含油量等性状方面多数表现超亲优势,杂种产量与两亲平均对比优势率为17.16％,与较高亲本对比优势率为4.88％。国内外在这方面也有一些报导。但对甘兰型油菜不同杂种组合的 According to our study (1978), the heterosis in B.napus was significantly different between plant height, number of main stems, number of primary branches, number of pods per plant, number of per plant, And the per-acre yield and oil content and other traits most performance super-pro-heterosis, hybrid yield and average relative progeny rate of 17.16%, compared with the higher parent comparative advantage rate was 4.88%. There are some reports in this area at home and abroad. But different hybrid combinations of Brassica napus