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研究结果表明，甜菜植株对氮吸收量与施氮量呈正相关（ｒ＝０．９９６￣）；甜菜生育中前期，７０％以上的氮分配到地上部，促进同化器官的建成；高氮处理，甜菜生育后期地上部氮分配率仍较高，不利于块根增长和糖分积累；甜菜叶片硝酸还原酶活性随生育进程而提高，至７月２５日左右达最大值，而后减弱，说明甜菜对氮的吸收与同化，以生育前中期为主，氮肥应作为基肥或早期追肥施用。本文还探讨了施氮量与根产量、含糖率及有害物质的关系。
The results showed that there was a positive correlation between nitrogen uptake and nitrogen application rate in sugar beet plants (r = 0.996 ~). In the early stage of sugarbeet growth, more than 70% of nitrogen was distributed to aboveground parts and facilitated the formation of assimilating organs. Nitrogen distribution rate of above-ground shoots was still high in the late stage of sugar beet growth, which was unfavorable to root growth and sugar accumulation. Nitrate reductase activity of sugar beet leaves increased with the growth and reached the maximum value on July 25, then decreased, Absorption and assimilation to fertility before and after the main, nitrogen fertilizer should be used as a base fertilizer or early dressing. The paper also discussed the relationship between nitrogen application rate and root yield, sugar content and harmful substances.