【摘要】 利用１４Ｃ示踪术，研究了人参不同生育期同化１４Ｃ产物的残留率，对４～６年生人参产量形成与同化产物分配的关系。结果表明，同化产物向终产物的分配比率对产量构成具有决定性作用，而且由于同化产物在生长、呼吸及贮存间的分配视生长发育状况而改变，所以不同生育期同化产物对产量构成的影响不同。营养生长期同化产物主要用于结构生长，影响主要库器官的贮存能力。后期同化产物是根中贮藏性多糖及有效成分形成的主要来源，对产量构成起主导作用更多还原

【Abstract】 By using 14 C labeling technique the relationship between yield formation and photosynthetic products distribution of ginseng was studied. The results showed that the distributive ratio of photosynthetic products to final products determined the yield formation. The distribution of the photosynthetic products among growing, respiring and saving varied during the development stage of ginseng plants, resulting different yield formation, The photosynthetic products, which were mainly used to build plants and control the storage capacity of major saving organs during the nutritive growth period, were the main source of storage polysaccharide and valid composition during the later growth period with dominant effect on yield formation. \ \更多还原