不同类型青贮玉米饲用产量及营养价值对密度调控的响应  

Effect of Planting Density on Forage Yield and Nutritive Value of Different Maize Varieties

作　　者：孙继颖[1] 高聚林[1] 王志刚[1] 于晓芳[1] 胡树平[2] 刘剑 包海柱[1] 霍鲜鲜[3] 白云龙 闫东 SUN Ji-ying;GAO Ju-lin;WANG Zhi-gang;YU Xiao-fang;HU Shu-ping;LIU Jian;BAO Hai-zhu;HUO Xian-xian;BAI Yun-long;YAN Dong(College of Agronomy,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010019,China;Vocational and Technical College,Inner Mongolia Agricultural University,Baotou,Inner Mongolia 014109,China;College of Animal Science,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China;Soil Fertilizer and Water-saving Agriculture Work Station in Inner Mongolia Autonomous Region,Hohhot,Inner Mongolia 010010,China)

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019 [2]内蒙古农业大学职业技术学院,内蒙古包头土默特右旗014109 [3]内蒙古农业大学动物科学学院,内蒙古呼和浩特010018 [4]内蒙古自治区土壤肥料和节水农业工作站,内蒙古呼和浩特010019

出　　处：《草地学报》2019年第6期1733-1742,共10页Acta Agrestia Sinica

基　　金：国家重点研发计划课题(2017YFD0300802);内蒙古自治区主席基金课题内蒙古自治区中加饲用玉米试验与示范;内蒙古自然科学基金课题(2017MS0348);农业部华北黄土高原地区作物栽培科学观测实验站(25204120);国家玉米产业技术体系(CARS-02-63);内蒙古自治区作物栽培与遗传改良重点实验室资助

摘　　要：为探讨青贮玉米(Zea mays L.)产量及品质对密度调控的响应机制,本试验以粮饲兼用型品种冀承单3号及青贮专用型品种真金青贮31号为供试材料,设5个密度梯度,采用裂区设计,对青贮玉米饲用产量及饲用营养价值进行了比较研究。结果表明:在相同种植密度下,冀承单3号籽粒产量高于真金青贮31号的籽粒产量,而冀承单3号的秸秆产量及全株产量低于真金青贮31号,冀承单3号及真金青贮31号获得最高籽粒产量的密度均低于其获得最高全株产量的密度;冀承单3号获得最高全株产量的密度为8.25×104株·hm-2,全株青贮产量达21364.69 kg·hm-2;冀承单3号获得最高粗饲料分级指数的密度为7.11×104株·hm-2,粗饲料分级指数达35.13 MJ·d-1;真金青贮31号获得最高全株产量的密度为7.31×104株·hm-2,产量达25254.82 kg·hm-2;真金青贮31号获得最高粗饲料分级指数的密度为7.01×104株·hm-2,粗饲料分级指数达24.12 MJ·d-1。综合青贮玉米饲用产量及饲用营养价值,推荐冀承单3号高产优质种植密度为7.11×104株·hm-2~8.25×104株·hm-2,推荐真金青贮31号高产优质种植密度为7.01×104株·hm-2~7.31×104株·hm-2。The trial used food-forage dual purpose Maize(Zea mays L.) Jichengdan 3 and forage Maize Zhenjin 31 as trial materials,to study the response of yield and quality characteristics to planting density in forage maize. The forage yield and forage value characteristics of different varieties under five different density levels were analyzed. The result showed that:at the same planting population,Jichengdan 3 produced higher kernel yield than Zhenjin 31,and less plant yield. The plant population of highest kernel yield was lower than that of plant yield in both Jichengdan 3 and Zhenjin 31. Jichengdan 3 at the density of 8.25×104plant·hm-2 got the highest forage yield of 21 364.69 kg·hm-2. Jichengdan 3 at the density of 7.11×104plant·hm-2 obtained the highest coarse fodder grading index of 35.13 MJ·d-1. The population of highest yield for Zhenjin 31 is 7.31×104 plant·hm-2,with the yield of 25 254.82 kg·hm-2. Zhenjin 31 at the density of 7.01×104plant·hm-2 obtained the highest raw fodder grading index of 24.12 MJ·d-1. It is concluded that,consideration of the forage yield and nutritive value,the recommendation of the best fit planting population for Jichengdan 3 is 7.11×104plant·hm-2~8.25×104plant·hm-2,while the recommendation of the best fit plant population for Zhenjin 31 is 7.01×104plant·hm-2~7.31×104 plant·hm-2.

关 键 词：青贮玉米 品种类型 饲用产量 饲用营养价值 密度调控 

分 类 号：S816.53[农业科学—饲料科学]