镇平县2024年玉米单产提升综合试验示范研究分析  

Research and Analysis of Comprehensive Experimental Demonstration for Improving Maize Yield in Zhenping County in 2024

作　　者：胡传芳[1] 邹春雅 刘小勐 HU Chuanfang;ZOU Chunya;LIU Xiaomeng(Zhenping County Agricultural Technology Extension Center,Zhenping Henan 474250,China)

机构地区：[1]河南省镇平县农业技术推广中心,河南镇平474250

出　　处：《绿洲农业科学与工程》2025年第1期36-43,共8页Oasis Agriculture Science and Engineering

基　　金：2024年河南省财政厅、河南省农业农村厅玉米单产提升综合试验示范项目。

摘　　要：通过玉米品种比较、种植密度、种植模式、水肥供应等试验及精准调控示范分析,在一定的种植密度范围内,提倡适当增加密度,在4700~5500株之间,产量最高,效益最佳,风险最低,随着种植密度加大,成本增加,病虫害发生率高,倒伏风险大,投入产出比反而降低;种植模式结果表明宽窄行种植模式优于等行距模式,主要表现在穗粒数增加,产量增加;水肥试验结果表明以4次追肥产量最高;水肥一体化比没有使用水肥一体化增产明显。Through comparative experiments on corn varieties,planting density,planting patterns,water and fertilizer supply,as well as demonstrations and analyses of precise regulation,it is advocated to appropriately increase the planting density within a certain range,specifically between 4,700 and 5,500 plants per hectare,to achieve the highest yield,optimal benefits,and lowest risk.As the planting density increases,costs rise,the incidence of pests and diseases becomes higher,the risk of lodging increases,and the input-output ratio decreases.The planting pattern results indicate that the wide-narrow row planting pattern is superior to the equal-row spacing pattern,mainly manifested in increased grain number per ear and higher yield.The results of water and fertilizer experiments show that the highest yield is obtained with four applications of top dressing.The integration of water and fertilizer significantly increases yield compared to not using this integration.

关 键 词：玉米 单产提升 密度 模式 水肥试验 

分 类 号：S513[农业科学—作物学]