品种和密度对青贮玉米生物量与农艺性状的影响  

Effect of variety and density on silage maize biomass and agronomic traits

作　　者：张晓 苏亚军 王瑛 范凯利 孙建祥 张瑞 贾莉 雷赵民[1] ZHANG Xiao;SU Ya-jun;WANAG;Ying;FAN Kai-li;SUN Jian-xiang;ZHANG Rui;JIA Li;LEI Zhao-min

机构地区：[1]甘肃农业大学动物科学技术学院,甘肃兰州730070

出　　处：《饲料研究》2022年第15期88-93,共6页Feed Research

基　　金：甘肃省高等学校产业支撑计划项目“平凉红牛种养结合高效循环生产体系建设技术应用(项目编号:2020C-08)”;甘肃省农业农村厅现代丝路寒旱农业“草食畜种养结合循环生产体系建设技术研究与应用专项(项目编号:GSSLCSX-2020-1)”;甘肃省科技重大专项计划“肉牛高效生态营养技术体系研究与示范(项目编号:17ZD2NC020)”;甘肃省现代农业(草食畜)产业技术体系专项(项目编号:GARSCSX-1);财政部和农业农村部“国家现代农业产业技术体系资助(项目编号:CARS-38)”。

摘　　要：试验旨在研究陇东黄土高原地区青贮玉米品种和密度对生物量与农艺性状的影响。选用东单13(H1)、正大12 (H2)、科玉188 (H3)、衡远Y4038 (H4)及濮单6号(H5) 5个青贮玉米品种为试验对象,分别设4.50×10^(4)(D1)、5.25×10^(4)(D2)、6.00×10^(4)(D3)、6.75×10^(4)(D4)和7.55×10^(4)株/hm^(2)(D5) 5个种植密度,玉米籽实乳浆线达到1/2时测定全株玉米相关生物量及农艺性状。结果显示:玉米品种与种植密度的交互作用对其农艺性状和生物量无显著影响(P>0.05)。品种对株高、穗位高、穗长、穗宽、持绿度和百粒干重具有极显著影响(P<0.01);密度对单株重、鲜物质产量、干物质产量、茎干重、叶干重和果穗干重具有极显著影响(P<0.01)。灰色关联度分析结果的排名为:H3D2 (0.066 59)>H4D3 (0.064 39)>H4D5 (0.062 55)。研究表明,青贮玉米的种植密度为5.25万株/hm^(2)的科玉188、6.00万株/hm^(2)的衡远Y4038及7.50万株/hm^(2)的衡远Y4038适宜在环县推广种植。The experiment was conducted to study the effects of silage maize variety and density on biomass and agronomic traits in the Loess Plateau region of Long dong. Five silage maize varieties, Dong dan 13(H1), Zheng da 12(H2), Ke yu 188(H3), Heng yuan Y4038(H4) and Pu dan 6(H5), were selected as experimental objects. Five planting densities were set, 4.50×10^(4)(D1), 5.25×10^(4)(D2), 6.00×10^(4)(D3), 6.75×10^(4)(D4) and 7.55×10^(4)plants/hm^(2)(D5),respectively. The biomass and agronomic traits of whole maize were measured when the seed whey line reached 1/2. The results showed that the interaction between maize variety and planting density had no significant effect on agronomic traits and biomass(P>0.05). The varieties had significant effects on plant height, ear height, ear length, ear width, green holding and dry weight of 100 grains(P<0.01). Density had significant effects on weight per plant, fresh matter yield, dry matter yield, stem dry weight, leaf dry weight and ear dry weight(P<0.01). The ranking of grey correlation analysis results was:H3D2(0.066 59) > H4D3(0.064 39) > H4D5(0.062 55). The results showed that Ke yu 188 with the planting density of52 500 plants/hm^(2), Heng yuan Y4038 with the planting density of 60 000 plants/hm^(2) and Heng yuan Y4038 with the planting density of 7 500 plants/hm^(2) were suitable for planting in Huan County.

关 键 词：青贮玉米 品种 种植密度 生物量 农艺性状 

分 类 号：S816[农业科学—饲料科学]