近四十多年来,世界各甜菜种植国单位面积产量有了不同程度的提高,这都是应用综合农业技术措施(优质高产多倍体杂种,增施无机化肥,应用植物生长调节剂和病虫害防治等)的结果。但其中一项重要的原因是甜菜施用无机化肥的数量提高了,并且在施肥中又主要增加了氮素化肥,结果提高了块根产量,但降低了含糖量,有时甚至出现块根产量增加的经济收益不能补偿糖分损失的情况。于是,甜菜含糖率的下降,引起了世界各生产国的普遍重视。从大量的研究报道来看,甜菜块根含糖率及其品质与氮素供应有十分密切的关系。甜菜生育中心是积累蔗糖,实现该过程必需庞大的光合器官—叶丛 In recent forty years, the yield per unit area of ​​each sugar beet growing country in the world has been increased to different extents, all of which are the results of applying comprehensive agro-technical measures (high yield and high yield polyploid hybrids, increasing inorganic fertilizers, application of plant growth regulators and pests and diseases Prevention and treatment, etc.) results. However, one of the important reasons is that the number of inorganic fertilizers applied to sugar beets has increased and nitrogen fertilizers have mainly been increased during fertilization, resulting in increased root tuber yield, but lower sugar content and sometimes even higher root tuber yield Income can not compensate for the loss of sugar. As a result, the decline in sugar beet yield has aroused the universal attention of all producing countries in the world. From a large number of research reports, the sugar content of beet root tuber and its quality and nitrogen supply are very closely related. Sugarbeet breeding center is the accumulation of sucrose, the process must be huge photosynthetic organs - leaves and plexus