摘要
在黑土区耕层有效锌含量0.61ppm条件下,研究甜菜各营养生长期干物质和有效锌变化的结果,甜菜幼苗期吸收锌的强度最大:不同生长期吸收锌营养的速度同植株干物质增长是同步,其中块根糖分增长期吸收速度最快;甜菜吸收锌的数量,除幼苗期很少以外,其它三个营养生长期都保持较高的水平;幼苗期和叶丛快速生长期锌主要分配在地上部,块根糖分增长期和糖分积累期锌主要分配在地下部.
Under the black soil layer with zinc 0.61 ppm. condition, the change dry matter and effective zinc were studied during the vegetative growth phase. Maximum absorption was in the seedling stage. The absorben speed of zinc was synchronism with dry matter increasing in plant in different growth phase. Among them, the absorbent speed was fastest only in the root sugar content increasing stage. The higher amount of zinc absorbed by sugar beet in the other three vegetative phase, except the less in the seedling stage. The zinc distributed to the tops mainly during the seedling stage and fast growing stage of foliage and it distributed into the beet root during the root sugar content increasing stage and the sucrose accumulative a stage.
