论文部分内容阅读
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。
Leaf duration, single leaf area, total leaf area per plant, photosynthesis intensity and yield components of winter wheat “Fengmai 13” planted at 2150m (elevation) and 480m (lowland) were compared. The results showed that compared with the lowland, the highland wheat had longer duration, single leaf area and total leaf area per plant, lower early photosynthesis intensity, little difference in the middle growth period, and obviously higher after filling. One-thousand-grain-weight wheat was higher, while the number of grains per panicle was lower than that of the lowland. The difference of yield components was discussed from the perspective of photosynthesis yield and the suggestion was put forward to increase the number of grains per spike in highland wheat.