“青海油,遍街流。”这句民谚,用文字夸张的手法,形象生动地道出了青海菜籽播种面积大,品种好,产量高的事实。 青海地处青藏高原,海拨高,温度适宜,日照时间长,属大陆高寒气候,有的地区虽不宜种植麦类和豆科作物,但油菜生长良好。所以,这里不仅河湟流域的海东农业区,每年种植了大量的油菜,在西部的青海湖 “Qinghai oil, all over the street.” This sentence proverb, with words exaggerated way vividly demonstrated Qinghai rapeseed sown area, variety is good, the fact that the yield is high. Qinghai is located in the Qinghai-Tibet Plateau, high altitude, suitable temperature, long sunshine, is a continental climate, although it is not appropriate to grow wheat and leguminous crops in some areas, but the rape grows well. Therefore, not only here Haidong agricultural areas in the river valley, each year planted a large number of rape, in the western Qinghai Lake