【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。更多还原

【Abstract】 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 150 kg/hm~2 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/hm~2 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% and27.47%. Therefore,it can be obtained that the mixed sowing can obviously improve the quality of forage crop.更多还原