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以两个杂交品种和两个优质品种为材料，比较分析了不同品种之间氮磷钾的浓度变化和吸收积累特性。结果表明：油菜子叶期氮磷钾浓度不高，幼苗期最高钾浓度在蕾苔期还有第二高峰。优质油菜中前期长势慢，但含氮率高；油菜整个生育期中以蕾苔期氮磷钾积累强度最大，尤其是钾，其次为栽后一个月至抽苔现蕾前，花期积累速度下降，果期不再积累钾，积累的氮磷也较少；杂交品种氮磷钾的积累有较明显的优势，特别是蕾苔期和苗后期，而优质品种则表现出一定的劣势
Taking two hybrid varieties and two high-quality varieties as materials, the changes of N, P and K concentration and absorption and accumulation characteristics of different varieties were analyzed. The results showed that the concentrations of N, P and K in the cotyledon stage were not high, and the highest potassium concentration in seedling stage had the second peak in the budding stage. During the whole growth period of rapeseed, the accumulation strength of NPK, especially potassium, was the highest in the rapeseed stage, followed by that of the first rapeseed, No accumulation of potassium in the fruit stage and less accumulation of nitrogen and phosphorus. The accumulation of nitrogen, phosphorus and potassium in the hybrid cultivars had obvious advantages, especially in the budding stage and late seedling stage, while the high-quality cultivars showed some disadvantages