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秋季喂饲~(14)CO_2,翌年生长初期矮砧红星苹果幼树地上部和根系间~(14)C 同化物质含量差距大于乔砧树.矮砧树砧穗组织构造差异较大,对~(14)C 同化物质有较大的滞阻作用.生长初期限制根系内贮藏的~(14)C 同化物质上运,从而抑制了地上部的营养生长.
(14) CO_2, the difference of the assimilate content of ~ (14) C in root and shoot of Dwarf Red Star apple in the following year was larger than that of Joe anvil, (14) C assimilation substances had a greater resistance to stagnation.Under the initial growth stage, the uptake of ~ (14) C assimilates in the root system was restricted and the vegetative growth of shoots was inhibited.