四川省剑阁县化林大队从1964年以来,坚持“以粮为纲,全面发展”的方针,在狠抓粮食生产的同时,对油菜等经济作物,开展科学实验,使棉、油获得大幅度增产。1970年120亩油菜,亩产386斤;1971年种120亩,亩产418斤;1972年油菜亩产达440斤。 Since 1964, Jianhe County Hualin Brigade in Sichuan Province has adhered to the principle of “taking grain as the key link and all-round development ” and paid close attention to grain production while carrying out scientific experiments on the economic crops such as rape, so that cotton and oil can be obtained Significantly increase production. In 1970, 120 mu of rapeseed was planted, yielding 386 kilos per mu; in 1971, planting 120 mu of mu produce 418 kilograms; in 1972, the yield of rape reached 440 kilos.