呼吸作用是植物体内一个很重要的代谢过程，本文研究了水稻杂种优势与细胞色素氧化酶和呼吸强度的关系。实验结果表明，具杂种优势的水稻其亲本细胞色素氧化酶有一定的互补效应，同时，水稻杂种幼苗的呼吸强度也较强。这些指标有可能作为杂交水稻亲本选配时杂种优势预测的初步依据。 Respiration is a very important metabolic process in plants. In this paper, the relationship between heterosis of rice and cytochrome oxidase and respiratory intensity was studied. The experimental results showed that the heterosis rice had some complementary effects with the parental cytochrome oxidase, and at the same time, the respiration intensity of rice hybrid seedlings was also strong. These indexes may be used as the preliminary basis for heterosis prediction of hybrid rice parents.