不同玉米群体灌浆期叶片生理特性的研究

Study on Leaves Physiological Characteristic of Different Maize Population at Filling Stage

在两种种植密度下,对三种株型玉米品种灌浆期叶片生理特性进行了研究.结果表明:耐密型品种中层叶片可溶性糖、可溶性蛋白和比叶重分别比对照提高20.1%、15.2%、8.1%;中间型品种的各指标也分别比对照提高17.8%,12.1%,11.8%;平展型品种的各指标分别比对照提高13.2%,11.4%,9.7%.因此,选择合理的种植密度,保证中层叶片发挥最佳生理功能是不同株型玉米品种达到高产的基础.

In both plonting density, three varieties of grain - filling stage of eom plant leaves physiologicul characteristics were studited. The results showed that soluble sugar, soluble albumen and specific leaf weight of mid - layer leaves were 20.1%, 15.2% ,8.1% higher than that of controls in erectophile maize,17.8% ,12.1% ,11.8% higher in mid - type maize and 13.2% ,11.4% ,9.7% higher in planophile maize, respectively. Therefore, the choice of reasonable planting density to guarantee optimization physiological function of mid - layer leaves was the basis of heavy producing of different maize population.