摘要
试验表明，幼苗期甜菜植株中镁的含量最高；不同营养生长阶段植株对镁的吸收速度与绿色组织特别是叶片生长速度一致；在叶丛快速生长期甜菜植株对镁的吸收量约占全生育期的６０％；苗期到叶丛快速生长期约９０％的镁分配在叶丛特别是叶片中；以后随生育进程，由于生长中心向地下部转移，根中镁积累量越来越多。
The experimental results have shown that the Magnesium content is very high in theplants during seedling stage,the uptaking rate of magnesium is the same with the growingspeed of green leaves during vegetation growth. Just 60% of whole growing stage,themagnesium have absorpted in the lush growing stage of foliage. About 90%of magnesiumhave distributed to the leaves of sugar beet from seedling stage to lush growing stage of foli-age. The growing centre have turned to the underground part,the magnesium content haveaccumulated in the root as much as possible.
关键词
甜菜
镁
吸收
分配
Sugarbeet
Magnesium
Absorption
Distribution
