试验研究结果表明 ,高山生态型玉米品种与平原生态型玉米品种的叶片构造 ,叶绿素含量、比叶重、干物质积累与分配、光合强度、净同化率、灌浆速度 ,粒叶比等重要生理特性均有明显差异。高山生态型玉米品种叶片表皮毛较多 ,毛短 ,叶片气孔数目少 ,气孔也小 ;平原生态型玉米品种表皮毛较多 ,且毛较长 ,叶片气孔多 ,气孔也大。高山生态型玉米品种的叶绿素含量、比叶重、干物量。转运率、光合强度、净同化率、粒叶比等主要生理指标均低于平原生态型玉米 ,但灌浆速度则是高山生态型玉米快 ,而平原生态型玉米较慢 The experimental results showed that the leaf structure, chlorophyll content, specific leaf weight, dry matter accumulation and distribution, photosynthetic intensity, net assimilation rate, grain filling rate, grain-leaf ratio and other important physiological characteristics of alpine ecotype maize varieties and plain ecotype maize varieties There are obvious differences. The alpine ecotype maize varieties had more epidermal hairs, shorter hairs, fewer leaf stomata and smaller stomata. The plain ecotype maize varieties had more epidermal hairs, longer hairs, more leaf stomata and larger stomata. The chlorophyll content, specific leaf mass and dry matter of alpine ecotype maize varieties. The main physiological indexes such as translocation rate, photosynthetic rate, net assimilation rate, grain-leaf ratio were all lower than those of plain ecotype maize, but the filling speed was faster than alpine ecotype maize, while that of plain ecotype maize was slower