不同种植密度对玉米新中玉801、京农科728灌浆特性的影响  

Effects of different density on grouting characteristics of maize Xinzhongyu 801 and Jingnongke 728

作　　者：舒中兵 李辉 段明禹 宋成孝 陈浪 毕世敏 SHU Zhong-bing;LI Hui;DUAN Ming-yu;SONG Cheng-xiao;CHEN Lang;BI Shi-min(Zunyi Comprehensive Experimental Station of National Maize Industry Technology System/Zunyi Institute ofAgricuhure,Zunyi 563000,Guizhou,China)

机构地区：[1]国家玉米产业技术体系遵义综合试验站/遵义市农业科学研究院,贵州遵义563000

出　　处：《湖北农业科学》2021年第6期20-22,共3页Hubei Agricultural Sciences

基　　金：国家玉米产业技术体系(CARS-02-78)。

摘　　要：运用裂区设计,研究了2个杂交玉米品种新中玉801、京农科728的灌浆特性。结果表明,通过单果穗鲜重分析得出,新中玉801是稀植大穗型品种,而京农科728是耐密型品种;通过百粒鲜重、干重分析得到,玉米子粒的大小与品种遗传有关,受种植密度的影响较小;通过子粒含水量分析得到,子粒含水量在整个灌浆进程中逐渐减少;通过灌浆速率分析得到,新中玉801这种稀植型品种的灌浆速率还受种植密度的影响,而京农科728这种耐密型品种的灌浆速率受种植密度的影响较小。百粒鲜重、干重、含水量与品种遗传有关,受种植密度的影响较小。Thegrouting characteristics of two hybrid maize varieties,Xinzhongyu 801 and Jingnongke 728,were studied by split plot design.The results showed that Xinzhongyu 801 was a big ear type variety with sparse planting,and Jingnongke 728 was a dense-toler⁃ant type variety,through the analysis of the fresh weight of singlespike.The analysis of 100-grain fresh weight and dry weight showed that the grain size of maize was related to the heredity of varieties,but not influenced by planting density.Through the analysis of grain water content,it was found that the grain water content decreased gradually during the whole filling process.Through the analysis of the grain filling rate,it was found that the grain filling rateof Xinzhongyu 801 was also affected by planting density,but the grain fill⁃ing rateof Jingnongke 728 was less affected by planting density.The fresh weight,dry weight and water content of 100-grain were relat⁃ed to the heredity of the variety,and were not affected by the planting density.

关 键 词：玉米 种植密度 新中玉801 京农科728 灌浆特性 

分 类 号：S513[农业科学—作物学]