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油菜是西藏的主要油料作物。种植历史悠久,分布范围广泛。常年播种面积占全区作物播种总面积的5%左右。1985年,西藏油菜籽平均单产89.7公斤,总产达1435万公斤基本上实现了油料自给。长期以来,西藏主要种植白菜型春油菜(B.campestris),约占油菜播种总面积的80～85%。芥菜型油苗(B.juncea)在“一江两河”流域有一定面积,约占15～20%。七十年代后期,引种甘兰型春油菜(B.napus)成功,高产优质品种“Oro”在个别地方曾小面积栽培。但由于生育期偏晚,水肥条件要求较高,加之技
Rape is the main oil crop in Tibet. A long history of cultivation, distribution of a wide range. The annual planting area accounts for about 5% of the total crop planting area in the region. In 1985, the average yield of Tibet rapeseed was 89.7 kilograms, with a total output of 14.35 million kilograms, basically realizing fuel self-sufficiency. For a long time, Tibet has mainly planted B. campestris, accounting for about 80-85% of the total canola sown area. B. juncea must have a certain area in the “one river and two rivers” basin, accounting for 15-20%. In the late seventies, B. napus was introduced successfully. The high-yield and high-quality variety “Oro” was cultivated in small areas in some places. However, due to late growth period, higher water and fertilizer conditions, coupled with technology