中文摘要：

以玉米等行距为对照,研究了豫西地区套作模式下宽窄行栽培对夏玉米生长发育及产量因素的影响。结果表明：与等行距栽培相比,宽窄行的籽粒灌浆速率显著提高,有利于夏玉米营养生长和干物质的积累,株高增高,并且叶面积指数前期增长快,后期下降慢,生物产量高,百粒重高,产量性状明显改善,其中平均产量为6660.2kg.hm-2,比等行距增产16.7%,增产显著。

英文摘要：

With the equal row spacing of flat planting corn as CK,the growth and yield of summer maize were studied on the wide-narrow row spacing mode in west Henan Province.The results showed that compared with the equal row spacing,the grain filling rate of the wide-narrow row spacing mode increased significantly in favor of summer corn growth,dry matter accumulation and stem length.Besides,the former of leaf area index increased rapidly early,the kernel weight,grain traits significantly has improved.compared with equal＇s,the average yield of wide-narrow row spacing mode was 6660.2kg·hm-2,the rate increased by 16.7%.