高产小麦新品种的选育取决于对许多环境因子更好的适应。环境因子包括诸如CO_2供应、光周期变化、光照强度、温度等不能控制的基本因素和病害、倒伏、干旱等可以通过育种手段和农业措施来加以克服的威胁着潜在产量的危险因素。本文内容则限于在无灾害及优良农业措施等假想条件下讨论潜在产量的育种问题,其目标将为有关于决定潜在产量的生理性状。 Breeding of high-yielding wheat varieties depends on better adaptation to many environmental factors. Environmental factors include uncontrollable basic factors such as CO 2 supply, photoperiodic changes, light intensity, temperature and other risk factors that threaten potential yields that can be overcome by breeding and agricultural measures such as diseases, lodging and drought. This article is limited to breeding issues that discuss potential yields under hypothetical conditions such as disaster-free and good agricultural practices, with the goal of having physical traits that determine potential yield.