银杏叶量及负载量对枝、叶、种实养分影响的研究Ⅱ　银杏枝、叶、种实中可溶性糖、淀粉含量变化及花芽形成

Study on Effect of Number of Deaves and Seeds Of Ginkgo biloba L.on Nutrition of Shoots, heaves and SeedsⅡ The Changes of Soluble Sugar and Starch in Shoots,Leaves, Seeds and Flower Bud Formation

通过测定枝、叶、种实中可溶性糖、淀粉含量和调查花芽形成数量，得到以下结果：１）叶片中可溶性糖含量较高，淀粉含量较低，在短枝中相反；２）９月中旬以后表现为叶量增大，短枝中淀粉、可溶性糖含量增高；负载量越大，叶片中淀粉、可溶性糖越低，而在短枝中二者含量增高；３）叶量增大，越有利于花芽形成，负载量越大，花芽形成越少，但叶量对花芽形成的影响大于负载量。

By way of measuring soluble sugar and starch content in shoots.leaves.seeds made and investi-gating flower bud formation obtained,the results as following: 1)In ieaves the content of soluble sugar was high-er, and content of starch appeared lower, but in short shoots, there was a opposite result to leaves on which : 2 ) Af-tor mid Sept, the more the number of leaves was. the higher the content of soluble sugar and starch in the brachy-blasts was; the heavier seed-load caused the lower content of soluble sugar and starch in leaves, but the higher inshort shoots; 3) The more the number of leaves was benefit to the flower bud formation .on the contrary . the heav-ier seed-load reduced the forming number flower bud ,but the influence of leaf number on the of flower bud for-mation was more important than that of the seed-load.