摘要
为明确不同类型青贮玉米在临沂地区最佳种植密度,设置了4个密度梯度(60000、75000、90000、105000株/hm^2),研究种植密度对专用型青贮玉米雅玉8号和粮饲兼用型玉米登海605饲用产量和营养价值的影响。结果表明:密度对不同类型青贮玉米鲜草、干草产量影响显著,密度增加,青贮玉米鲜草产量和干草产量均先增加后减少,在密度75000株/hn?时均获得最高鲜草、干草产量。密度对不同类型青贮玉米粗脂肪、粗灰分、酸性洗涤纤维含量和子粒产量、粗蛋白产量、粗脂肪产量、可消化干物质、相对饲喂价值、无氮浸出物含量和总能量影响显著,密度增加,雅玉8号粗蛋白、粗脂肪含量和可消化干物质、干物质采食量、相对饲喂价值和无氮浸出物含量下降,粗灰分、中性洗涤纤维和酸性洗涤纤维含量呈上升趋势,子粒产量、粗蛋白、粗脂肪产量和总能量先增加后减少,在密度75000株/hm^2均获得最高子粒、粗蛋白、粗脂肪产量。从饲料总能量来说,专用型青贮玉米雅玉8号和粮饲兼用型玉米登海605在山东临沂地区饲用的最佳种植密度均为75000株/hm^2。
In order to clarify the optimal planting densities for different types of silage maize in Linyi region.The forage yields and nutritional values of special silage maize Yayu 8 and grain-feeding silage maize Denghai 605 were studied under four planting densities of 60000,75000,90000,105000 plants/hm2.The results showed that planting density had significant effects on the fresh grass yield and dry grass yield of different types silage maize.With the increase of density,the fresh grass yield and dry grass yield of both silage maize varieties increased first and then decreased.The highest fresh grass yield and dry grass yield were obtained at the density of 75000 plants/hm2.Density had significant effects on crude fat,crude ash,acid detergent fiber(ADF)contents and crude protein yields,grain yields,crude fat yields,digestible dry matter(DDM),relative feed value,nitrogen-free extract(NFE)content of different silage maize varieties.With increase of density,crude protein,crude fat content and DDM,dry matter intake,NFE content reduced in different types of silage maize,while the contents of crude ash,neutral detergent fiber and ADF increased.The grain yield,crude protein yield and crude fat yield and total energy increased first and then decreased,the highest grain yield,crude protein yield,crude fat yield and total energy were obtained at the density of 75000 plants/hm2.From total energy of the forage,the optimal planting density of special silage maize Yayu 8 and grainfeeding silage maize Denghai 605 was 75000 plants/hm2 in Linyi region,Shandong Province.
作者
庄克章
吴荣华
张春艳
徐立华
徐相波
丁一
王振南
Zhuang Kezhang;Wu Ronghua;Zhang Chunyan;Xu Lihua;Xu Xiangbo;Ding Yi;Wang Zhennan(Linyi Academy of Agricultural Sciences,Linyi 276012,Shandong,China;Maize Research Institute,Shandong Academy of Agricultural Sciences,Jinan 250100,Shandong,China;College of Agriculture and Forestry Sciences,Linyi University,Linyi 276000,Shandong,China)
出处
《作物杂志》
CAS
北大核心
2019年第6期140-144,共5页
Crops
基金
2016年山东省农业良种工程项目“优质高产耐盐碱青贮玉米新品种培育与示范”（2016LZGC001）
山东省农业科学院农业科技创新工程“粮经饲三元高效种植模式及关键技术”（CXGC2016B03）
山东省2015年度农业重大应用技术创新项目“青贮玉米高产高效生产技术集成与示范”
关键词
密度
青贮玉米
产量
营养价值
Density
Silage maize
Yield
Nutritional value
