东北地区几年来甜菜种植面积不断增加,不断出现大面积高额产量,每公顷产量达30,000公斤以上,但一般产量每公顷10,000～14,000公斤。一.甜菜的生物学特性甜菜是二年生的作物。在生长第一年里,形成根、叶,根中积累糖分,在生长第二年里生出花苔,开花结实。甜菜种子发芽需要适当的温度和水分。播种后如果土壤干旱,虽有足够温度,仍不能适时发芽,如1951年由于播后月余无雨, In the northeast region, beet cultivation has been increasing for several years. Large-area and high-yielding crops have been produced, yielding more than 30,000 kilograms per hectare, but the general output is 10,000 to 14,000 kilograms per hectare. A beet biological characteristics Beet is a biennial crop. The first year of growth, the formation of roots, leaves, roots in the accumulation of sugar, in the second year of growth gave birth to moss, flowering strong. Germination of beet seeds requires proper temperature and moisture. If the soil after sowing arid, although there is sufficient temperature, still can not germinate in time, such as in 1951 due to rain after sowing more than a month,