黑龙江省是我国向日葵主产省份之一。1979年以来,每年播种面积都超过300万亩,居全国首位,并有逐渐扩大的趋势。其中以龙江、甘南、拜泉、林甸、依安等县面积最大,约占全省总面积的70％。但是,我省大面积栽培油用向日葵年限 Heilongjiang Province is one of the main producing provinces of China’s sunflowers. Since 1979, the annual sown area has exceeded 300 million mu, ranking first in the country and has been gradually expanding. Among them, the area of ​​Longjiang, Gannan, Baiquan, Lindian and Yi’an counties is the largest, accounting for about 70% of the total area of ​​the province. However, a large area of ​​oil cultivation in our province with sunflower years