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西藏平均海拔4 000 m以上,温度上升缓慢,无霜期短,大部分地区一年只能种植一季农作物,所以目前生产上大田种植的油菜品种均为春性。油料作物由于受光照强、昼夜温差大、温度低、生育期长等气候影响,含油量普遍较高。西藏农作物总播种面积376.31万亩,其中油菜作物播种面积36.54万亩,占总播种面积的10%左右。为进一步加大其推广力度,并提高油菜单位面积产量和良种覆盖率,经过多年生产试验示范,初步形成适合本区域种植的油菜新品种生产技术。
At an average elevation of 4,000 m above sea level in Tibet, the temperature rises slowly and the frost-free period is short. Only one season of crops can be planted in most areas in a year. Therefore, the current varieties of rapeseed planted in the fields are springiness. Oil crops are generally high in oil due to strong light intensity, large temperature difference between day and night, low temperature and long growth period. The total sown area of Tibetan crops is 3.7631 million mu, of which 365.4 mu is the sown area of rapeseed crops, accounting for about 10% of the total sown area. In order to further intensify its promotion efforts and improve rapeseed yield per unit area and seed coverage, after years of experimental production and demonstration, a new rapeseed production technology suitable for planting in this region was initially formed.