甜菜是二年生作物,第一年主要是营养生长,甜菜在第一年的营养生长中,其外部形态特征的变化不像其他作物那样明显。地上部主要是茎叶的生长,随着生长期的延长,叶片不断增加,叶面积不断扩大,随后老年叶不断枯萎;地下部随着主根不断膨大,糖分也不断增长,但从形态上很难划分生育期。这样要采取相应的农业技术措施,往往缺乏科学的依据。为了进一步研究甜菜营养生长规律,并根据营养生长规律,提出甜菜营养生长生育 Beet is a biennial crop. The first year is mainly vegetative growth. In the first year of vegetative growth, the changes of its external morphological characteristics are not as obvious as those of other crops. The shoots grow mainly with shoot growing. As the growing season grows, the leaves increase continuously and the leaf area expands continuously. Then the aged leaves continue to wilt. The underground part grows with the expansion of the main roots and the sugar content, but it is hard to form Divide the growth period. Therefore, to take appropriate agricultural technology measures, often lack scientific basis. In order to further study the law of nutrition growth of sugar beet and put forward the nutrition growth and development of sugar beet