提高油菜产油量的途径,一方面是提高油菜单产,另一方面是提高油菜籽含油量。上海郊区大面积种植的油菜品种的菜籽含油率在38%左右,早熟类型36—38%,迟熟品种38—42%。如能将含油率提高3%,就等于把油菜籽单产提高10%。油菜籽单产受各方面因素的影响变动较大,而油菜各个品种的含油率的遗传性却比较稳定,受外界条件 The way to increase the yield of rapeseed is to increase the yield of rapeseed on the one hand and to increase the oil content of rapeseed on the other. The rapeseed oil content of large-scale rapeseed cultivated in the suburbs of Shanghai is about 38%, the early-maturing type is 36-38%, and the late-maturing varieties are 38-42%. An increase of 3% in oil content would be equivalent to a 10% increase in rapeseed yields. Rapeseed yield by various factors vary greatly, and rapeseed varieties of the oil content of the heredity is relatively stable, subject to external conditions