采收期对青贮玉米品质和产量的影响  

Effect of Harvesting Time on Yield and Quality of Silage Maize

作　　者：付忠军[1] 杨华[1] 姜参参 李淑君[1] 赵建国[1] 祁志云[1] 

机构地区：[1]重庆市农业科学院,重庆401329 [2]重庆市黔江区黔江实验中学校,重庆409000

出　　处：《西南农业学报》2014年第3期1343-1345,共3页Southwest China Journal of Agricultural Sciences

基　　金：2013年重庆市基本科研业务费(2013cstc-jbky-00504);2012年重庆市农业发展资金项目"全株优质青贮玉米不同采收期对产量及品质形成影响的研究";重庆市重点应用开发项目"青贮玉米及适宜反季节栽培的糯玉米新品种选育(cstc2014yykfB80014)

摘　　要：以青贮玉米品种渝青玉3号为研究对象,分5个采收期研究了不同采收期对青贮玉米品质和产量的影响.结果表明：采收期对青贮玉米品质和产量均有不同程度影响.随着采收期推迟,干重一直增加,鲜重不断降低,秸秆中ADF和NDF含量不断增加,粗蛋白含量和IVODM不断降低,粗脂肪含量先升高后下降,籽粒中粗蛋白和赖氨酸含量呈下降趋势,粗淀粉含量呈上升趋势,粗脂肪含量先上升后下降.研究显示,授粉后27～ 34 d是最佳采收时期.This study takes the silage maize variety Yuqingyu3 as the research object,and investigates the effect of five harvesting periods on yield and quality of silage maize.The results showed that harvesting time had different effects on the quality and yield of silage maize.As harvesting time puts off,the dry weight would keep increasing,while the fresh weight would keep decreasing; the content of ADF and NDF in the stalk was increasing,while that of crude protein and IVODM was decreasing; the content of crude fat increased at first,and then dropped.In the kernel,the content of crude protein and lysine decreased gradually,while that of the raw starch increased gradually.The content of crude fat would firstly ascend and then descend.The results showed that 27 to 34 days after pollination is the best harvesting time

关 键 词：青贮玉米 采收期 产量 品质 

分 类 号：S513[农业科学—作物学]