关于水稻穗机能的研究,已经有过:使用遮光法与剪叶法测定穗对结实的贡献程度;使用植物同化测定装置研究穗的光合作用与呼吸速度;以及关于~(14)C的同化与再分配的研究等。这些资料表明,穗对结实的贡献率约为10％,穗的光合作用速度为1—2毫克CO_2/100颖花/小时,并指出可以将穗看成是非光合作用的器官。在用遮光法、剪叶法及植物同化测定装置所进行的研究中,一直是把穗作为单一的器官 Studies on the panicle function of rice have been made by using light-shading and leaf-cutting methods to determine the contribution of ear to grain-setting; using plant assimilation measuring apparatus to study spike photosynthesis and respiration rate; and about the assimilation of ~ (14) C and Redistribution of research. These data indicate that the rate of ear to sturgeon contribution is about 10% and that of spike photosynthesis is 1-2 mg CO 2/100 spike / hour, indicating that the ear can be considered as a non-photosynthetic organ. In the studies conducted using the light-shading method, the leaf-cutting method, and the plant assimilation measuring apparatus, the ear has been the sole organ