甜菜是块根作物，对密度的要求较严格，自身调节能力差，依靠群体获取产量作用明显。稀植情况下，即使个体发育好，能弥补一定的总体产量（单位面积产量）损失，但含糖率也会明显降低，单位面积产糖量仍不高。长久以来，人们对甜菜种植密度的研究较多，并一致认为６６～７... Beet is a root crop, the density of the more stringent requirements, their ability to regulate poor access to rely on the role of groups to obtain significant output. In the case of sparse planting, even if the individual develops well, it can make up for the loss of a certain total yield (yield per unit area), but the sugar content will also be obviously reduced, and the amount of sugar per unit area is still not high. For a long time, people have more studies on the density of beet cultivation, and agreed that 66 ~ 7 ...