甜菜是需要大量氮肥的作物,通常是一般禾谷类作物的二倍。甜菜在生长繁茂期吸收利用氮肥的数量最多,约占整个生育期用量的80%。在磷、钾肥基本不缺的情况下,氮肥对甜菜的产量和含糖量影响很大。目前,氮肥使用上存在的问题是施入土壤中的氮素肥料绝大部分未被甜菜吸收利用而白白浪费掉了.据国内外研究资料 Beets are crops that require large quantities of nitrogen, usually twice as much as cereal crops. Sugarbeet uptake and utilization of nitrogen fertilizer in the lush growing period, accounting for about 80% of the entire growth period. In the phosphorus and potassium fertilizer is basically no shortage of circumstances, nitrogen fertilizer on sugar beet yield and a great influence. At present, the problem with the use of nitrogen fertilizer is that the vast majority of the nitrogenous fertilizer applied to the soil has not been wasted and used by the beet and was wasted. According to the research data both at home and abroad