绥李3号光合速率的研究

以绥李3号为试材,运用改良干重法,研究了绥李3号在自然条件下不同枝型叶片的净光合速率和光合产物的输出速率。结果表明：（1）绥李3号新梢成龄叶片平均净光合速率为26.03 mg·dm-2·h^-1,光合产物的输出速率（C02）为8.51 mg·dm^-2·h^-1,光合产物约有1/3输出;（2）新梢叶片制造和输出的光合产物高于其它枝型叶片,是树体发育和养分积累的主要来源,具有一定数量的新梢是树体健壮的标志;（3）库-源关系的作用力能够同时提高绥李3号叶片的净光合速率和光合输出速率,其中对光合产物输出方面的提高作用更显著。

Study on Photosynthesis Velocity of Plum Variety Suili No. 3

Using Suili No. 3 as experimental material,the study of net photosynthesis velocity and output velocity of product of photosynthesis of leaves of different branches in natural condition by improving dry-welghting method was conducted. The results were that; （1）Average net photosynthesis velocity（CO2 ）of adult leaves of young branches was 26.03 mg·dm-2·h^-1,output velocity of product of photosynthesis was 8.51 mg·dm-2·h^-1 ,about one third product of photosynthesis was output; （2）Net photosynthesis velocity of leaves of young branches was higher than that of leaves of other branches; （3）The function of sink source ratio could improve the net photosynthesis velocity and output velocity of products of photosynthesis of leaves,and the function on the latter was more notable.