施氮肥对全株玉米青贮饲料硝酸盐含量的影响  

Effects of nitrogenous fertilizer on nitrate content in corn silages

作　　者：韩立英[1] 玉柱[2] 

机构地区：[1]北京市农林科学院草业与环境研究发展中心 [2]中国农业大学草地研究所

出　　处：《中国饲料》2010年第20期37-39,共3页China Feed

基　　金：国家牧草产业技术体系;公益性行业科研专项"人工草地优质牧草生产技术研究与示范"(ny-hyzx072022);国家"十一五"支撑项目(2006BAD16B03204和2006BAD04A04206206)

摘　　要：本试验探讨了施氮肥对玉米青贮饲料中硝酸盐含量的影响,以及青贮后硝酸盐的动态变化。试验结果表明:施氮肥能显著增加玉米青贮原料和青贮饲料中硝酸盐含量(P﹤0.05);青贮后,随着存放时间的延长,硝酸盐含量明显降低,亚硝酸盐含量明显增加。This experiment evaluated the effects of nitrogenous fertilizer on nitrate of corn silages, and the dynamic changes of nitrate when the silages were opened. The results showed that： the silages treated with nitrogenous fertilizer had higher nitrate content than that of the untreated. When the silages were opened, nitrate content increased significantly, nitrite content decreased significantly as storage time extended.

关 键 词：青贮 施氮肥 硝酸盐 亚硝酸盐 

分 类 号：S816[农业科学—饲料科学]