【摘要】 对海拔2150米(高地)和480米(低地)种植的冬小麦“凤麦13”的叶片持续时间,单叶面积,每株总叶面积,光合作用强度和产量构成因素作了比较。结果表明高地小麦和低地的相比,叶片持续时间更长,单叶面积和每株总叶面积较小,光合作用强度前期较低,生育中期相差不大,灌浆后明显地较高。千粒重高地小麦较高,而每穗粒数则比低地的少。从光合作用产量的角度讨论了产量构成因素的差异,并提出增加高地小麦穗粒数的意见。更多还原

【Abstract】 The present paper compared winter wheat (Triticum sativum L. c.v. "Feng-mai-13") grown on the different altitude. The results showed, comparing wheat grown on higher altitude (2150 m) with that grown on lower altitude (840 m), that the former has a longer duration of leaves, a smaller area per leaf and total leaf area a plant; a lower intensity of photosynthesis during early stage, a higher intensity of photosynthesis during filling period, and little difference between both stages; a heavier thousand-kernel-weight, and a lesser number of grains per head than the latter. On the other hand, the difference of yield component has been disscused in terms of photosynthesis-yield. We proposed, on the basis of the dis-scusion, an assumption that how increase in number of grains per head which wheat is grown on higher altitude.更多还原