甜菜是二年生作物。第一年是营养生长;第二年是生殖生长。母根经窖藏后来年春栽采种,既费工、种子成本高,又容易在窖藏中,因窖温控制不好,结实株率低,甚至造成烂窖损失。母根采取冬栽露地越冬,即不经过切削、窖藏等,不但省工,成本低,而且母根可进行个体选择,繁殖系数高,产质量好。现将试验结果介绍如下: Beets are biennial crops. The first year is vegetative growth; the second is reproductive growth. After the mother of the cellar was planted in the spring after planting, both the cost of labor, high cost seeds, but also easy in the cellar, cellar temperature control is not good, stubborn plant rate is low, and even caused the loss of the rotten pit. The mother root winter planting open field to take the winter, that is, without cutting, cellaring, etc., not only labor-saving, low cost, and the mother can be individual selection, breeding coefficient, good quality. Now the test results are as follows: