运用示踪动力学分析方法，分析吲哚乙酸涂稻穗与剑叶后，剑叶中几种光合产物的变化情况，结果表明，吲哚乙酸涂稻穗后，能促进可输配物质的形成，抑制暂不输配物质的形成，对结构物质，呼吸消耗与光合产物输出具交替作用。吲哚乙酸涂剑叶后，能促进可输配物质、结构物质的形成，并对光合产物的输出具促进作用，对暂不输配物质与呼吸消耗也具交替作用。 By using tracer kinetic analysis method, the changes of several photosynthetic products in leaves of flag leaf and flag leaf of indole acetic acid were analyzed. The results showed that indole acetic acid could promote the formation of transmissible matter , Inhibit the formation of substances that are not to be transfused temporarily, and have an alternate effect on the structural substances, respiratory output and output of photosynthetic products. Indole acetic acid after the application of the flag leaf, can promote transportable substances, the formation of structural substances, and the output of photosynthetic products with a role in promoting, but also temporarily lose the material and respiratory consumption also have an alternate role.