一、前言在我們前一篇报告中,已初步地研究过玉米的光合生产率,通常从整个生育期間光合生产率的总和便可以表征出玉米的生物产量,但是我們考虑到不能单純地追求生物产量的提高,因为总的生物产量中仅仅只有某一部分产量对人們是最有經济价值的(所謂經济产量)。当然,經济产量一般说来是与生物产量密切相关的,但是由于植物在 I. INTRODUCTION In our previous report, the photosynthetic productivity of maize was initially studied. The photosynthetic productivity of maize is usually characterized by the sum of photosynthetic productivity throughout the entire reproductive period. However, we consider that we can not simply pursue biological production Because only a portion of the total biomass output is of the most economic value to people (the so-called economic output). Of course, the economic output is generally related to the biological yield, but because of the