1977年宁县早胜公社寺底大队农科站误将5个春油菜品种于7月13日播种,后生长旺盛,开花结实,9月12—24日收获,生育期62—73天,平均亩产53斤。据此,我们提出在全区开展复种油菜试验、示范。1978年宁县寺底大队复种4.6亩,平均亩产34斤。1979年南庙大队复种131亩,平均亩产30斤。1980年列为全区农技站示范推广项目,在庆阳、正宁、宁 1977 Ningxian Changsheng commune Temple at the end of the brigade agricultural station mistakenly 5 varieties of spring rape sown on July 13, after vigorous growth, flowering, September 12-24 harvest, the growth period of 62-73 days, the average mu Produce 53 pounds. Accordingly, we propose to carry out multiple cropping trials and demonstrations in the region. In 1978, at the end of Ningxian Temple at the end of 4.6 mu, the average yield of 34 pounds. South Temple Battalion 131 acres in 1979, an average of 30 kg per mu. In 1980 as a demonstration project to promote agricultural stations throughout the region, in Qingyang, Ning, Ning