玉米偏垄宽窄行种植方式的增产作用和生理特性研究

Research on Yield Increasing Effect and Physiological Characteristics of Maize Planted in Partial Ridge-Narrow/wide Row

以辽宁省主栽玉米品种沈玉21为试验材料,进行偏垄宽窄行种植方式的研究。试验以常规种植方式为对照,研究偏垄宽窄行种植方式的增产效果、生理指标变化和群体结构特点。结果表明,偏垄宽窄行种植方式单位面积产量显著高于常规种植,粒重与穗粒数明显增加,生物产量提高;偏垄宽窄行种植方式改善了玉米冠层结构,特别是明显改善了冠层中下部通风透光条件;偏垄宽窄行种植方式叶面积指数增大且持续时间较长,冠层内CO2浓度明显增加。

The planting method of partial ridge-narrow/wide row(PRNWR) was used to research with Shenyu21,the widely planted maize variety of Liaoning province.The effect of PRNWR on physiological indexes,population structure and yield were investigated,with the conventional planting method as control.The planting methods of PRN-WR significantly increased yield than conventional planting.The canopy structure,especially atmospheric and light permeating conditions in the middle and lower layer were obviously improved an...