垄作栽培对夏玉米根系和叶片生长发育及产量性状的影响研究

研究了不同栽培方式对夏玉米根系及叶片生长发育和主要产量性状的影响。结果表明：垄作栽培夏玉米与传统平作栽培相比，根系发达，0～50 cm土层各层次根系干重均增加；各叶位叶片宽度增加，长度基部1～5叶位缩短、中上部增加；各期叶面积系数都较大。垄作栽培比传统平作增产12.1%。

Effect of Sowing in Ridge on Root System Leaves and Yield Components of Summer Maize

In order to investigate the effect of different planting methods(conventional flat planting with flooding and raised bed planting with furrow irrigation) on root system and leaves and yield components of summer maize. The results indicated that comparison to conventional flat planting with flooding, raised bed planting with furrow irrigation could promote growth of root system and leaves of summer maize. Firstly, the summer maize under raised bed planting had healthier root system than that of conventional flat planting, with the former having heavier root system than the later from 0 - 50 cm soil layer. Secondly, the summer maize had more suitable LAI(leaf area index) under raised bed planting than that under conventional flat planting; and finally, raised bed planting could increase grain yield by 12.1% comparison to that of conventional flat planting.