不同种植密度对玉米品种产量形成及生长发育特性的影响  

Effects of Different Densities on Yield and Growth Characteristicson in Maize

作　　者：郑伟[1] 边丽梅[1] 董喆[1] 张丽妍[1] 张昊[1] 郝春雷[1] 孟繁盛[1] 慈艳华[1] 杜江洪[1] ZHENG Wei;BIAN Limei;DONG Zhe;ZHANG Liyan;ZHANG Hao;HAO Chunlei;MENG Fansheng;CI Yanhua;DU Jianghong(Chifeng Academy of Agriculture and Animal Husbandry Science,Chifeng,Inner Mongolia 024031,China)

机构地区：[1]赤峰市农牧科学研究院,内蒙古赤峰024031

出　　处：《陕西农业科学》2021年第8期52-55,共4页Shaanxi Journal of Agricultural Sciences

基　　金：内蒙古自治区科技重大专项-农牧交错区农田污染防治与可持续利用关键技术研究与示范(2019ZD009);国家重点研发计划粮食丰产增效科技创新专项(2017YFD0300801;2018YFD0300403);国家玉米产业技术体系赤峰综合试验站项目(CARS-02-49)。

摘　　要：以先玉335、京科968、迪卡159和赤单228为供试材料,采用随机区组设计,设有高中低3个密度处理,研究其对4个玉米品种产量及其生长发育特性的影响。结果表明随着种植密度的增加,4个玉米品种穗长、穗粒数和千粒重均呈逐渐减少的规律性变化,这表明种植密度的增加影响玉米果穗的形成和灌浆。玉米不同品种果穗生长情况均是前期较慢,后期呈现指数增长,增长迅速。从产量结果看赤单228最佳种植密度为8.25株·hm^(-2),迪卡159在种植密度是8.25株·hm^(-2)。而京科968和先玉335产量在7.50株·hm-2时,产量达到最大。Wihte maize varieties‘Xianyu 335’,‘Jingke 968’,‘Deca 159’and‘Chidan 228’as materials,a three-factor random block was used to explore the effect of different planting densities on maize yield and growth characteristics.The result showed that with the increase of planting density,the length,grain number and 1000-grain weight of 4 maize varieties decreased gradually,indicating that the increase of planting density affected the formation and filling of ear.The yield results showed that the optimum planting density of‘Chidan 228’was 82500 plants·hm^(-2),and‘Deca 159’was 82500 plants·hm-2.The yield of‘Jingke 968’and‘Xianyu 335’reached the maximum when the yield was 75000 plants·hm^(-2).

关 键 词：玉米 品种:种植密度 产量 生长发育特性 

分 类 号：S513[农业科学—作物学]