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我场地处青藏高原,青海湖畔。海拔3,250米,气候严寒干燥,年平均气温2℃,无霜期110天,3、4月份常刮大风。1970年以前,由于没有掌握油菜高产规律,广种薄收,单产大都在百斤以下。1972年以来,我们改进了油菜的栽培措施,使油菜单产不断提高,1975年12,541亩油菜,平均亩产240斤,比建场初期单产提高了5倍,其中有1,000多亩平均亩产达到320斤。1976年遭到长期低温和早霜危害,2万亩油菜中仍有12,417亩平均亩产143.4斤。
My field is located in Qinghai-Tibet Plateau, Qinghai Lake. 3,250 meters above sea level, cold and dry climate, the annual average temperature of 2 ℃, frost-free period of 110 days, 3,4 months often windy. Before 1970, due to the failure to grasp the law of high yield of rapeseed, a wide range of thin harvests, yields mostly below 100 pounds. Since 1972, we have improved the cultivation of rapeseed so that the yield of rapeseed will continue to increase. In 1975, 12,541 mow of rapeseed had an average yield of 240 jin, fivefold higher than the initial yield of the plot. Among them, the average yield per mu of 1,000 mu reached 320 jin. In 1976, it was endangered by long-term low temperature and early frost. There are still 12,417 mu of average yield per mu of 143.4 kg in 20,000 mu of rape.