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油菜是我国播种面积最大的油料作物,主要分布在长江流域。近年来种植区域逐渐向北扩展,在我省平原地区的种植面积也不断扩大。 我国北方冬
Rape is China’s largest sown area of oil crops, mainly in the Yangtze River valley. In recent years, the planting area has gradually expanded northward and the planted area in the plains of our province has also been expanding. China’s northern winter