祁连山牧区青贮玉米追肥及与箭筈豌豆混播对草产量及品质的影响  

EFFECT OF TOPDRESSING OF ZEA MAYS AND MIXED WITH VICIA SATIVA ON GRASS YIELD AND QUALITY IN QILIAN MOUNTAIN PASTORAL AREAS

作　　者：闫慧颖[1,2,3] 李春喜 YAN Hui-ying(Key Laboratory of Adaptation and Evolution of Plateau Biota（AEPB）,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Qinghai Xining 810008,China)

机构地区：[1]中国科学院西北高原生物研究所中国科学院高原生物适应与进化重点实验室,青海西宁810008 [2]中国科学院西北高原生物研究所青海省作物分子育种重点实验室,青海西宁810008 [3]中国科学院大学,北京100049

出　　处：《青海草业》2018年第3期2-6,27,共6页Qinghai Prataculture

基　　金：国家科技支撑计划课题(2012BAC08B06);青海省青藏高原特色生物资源研究重点实验室(2012-Z-Y10)

摘　　要：为了探讨祁连山牧区在青贮玉米拔节期追施尿素,青贮玉米与箭筈豌豆混播对草产量及品质的影响,开展了研究。结果显示:在玉米拔节期追施尿素150 kg/hm^2,鲜草产量比不追施增产13.72%~22.91%,干草产量增12.70%~27.29%;追施150 kg/hm^2,对粗蛋白含量没有影响;可降低灰分含量2.06%~25.68%。青贮玉米单播或与箭筈豌豆混播草产量差异不显著,混播灰分含量分别降低4.77%和18.15%,粗蛋白含量分别提高19.09%和34.38%,粗纤维含量分别降低5.80%和18.17%,钙含量分别增加19.51%和42.32%,磷含量分别增加20.16%和27.47%,混播能明显改善饲草品质。In this paper, the influence of topdressing of Zea mays and mixed with Vicia sativa on their grass yield and quality was investigated in Qilian Mountain pastoral areas. Results showed that 150kg/hm2 of aurea was topdressed at the jointing stage of Zea mays ,fresh grass yield increased by 13.72% -22.91%, hay production increased by 12.70%-27.29%.It makes no difference for the content of crude protein in Zea mays if 150 kg/hm2 of urea was topdressed, while the ash content decreased by 2.06% - 25.68%. Compared clean culture of Zea may with mixed sowing of Zea mays and Vicia sativa, after mixed sowing, there was little change in grass yield and the ash content decreased by 4.77% and 18.15% respectively, the content of crude fiber decreased by 5.80% and 18.17%. However, the content of crude protein increased by 19.09% and 34.38%. The calcium content increased by 19.51% and 42.32%. Similarly, the phosphorus content increased by 20. 16% and 27.47%. Therefore, it can be obtained that the mixed sowing can obviously improve the quality of forage crop.

关 键 词：玉米 追肥 混播 草产量 品质 

分 类 号：S812.4[农业科学—草业科学]