西藏拉萨市‘白燕2号’与箭筈豌豆不同混播比较研究

Comparative Study of Different Mixed Seeding on'White Oats No.2'and Vetch in Lhasa of Tibet

为了提高西藏高寒牧区饲草产量,缓解草畜矛盾。在西藏拉萨研究了‘白燕2号’与箭筈豌豆不同混播比例草地,在适宜刈割时期牧草养分比较研究。结果表明:各混播比例间的产草量、粗蛋白、粗脂肪、粗纤维、粗灰分、Ca和P含量差异显著,混播可显著提高产草量和牧草品质;且随着箭筈豌豆比例的增加,粗蛋白含量随之增加,最高为单播箭筈豌豆达到22.58%。各混播比例以H4为佳,鲜草产量达到7.71kg/m2、粗蛋白含量达到13.66%、粗脂肪含量达到1.99%、粗纤维含量达到35.99%、粗灰分含量达到6.77%、Ca:P为5.36。在西藏气候适宜的地区可将‘白燕2号’与箭筈豌豆按此比例(箭筈豌豆40%+‘白燕2号’60%)混播推广以改善饲草品质。

In order to improve the pastoral areas of the Tibetan alpine forage yield,ease the contradiction between the pasture and livestock.The study was to assess the different mixed proportion of seeding grass between ＇ White oats No.2 ＇ and Vetch in Lhasa of Tibet,was to carry out the comparative study of forages in appropriate cutting time.The results of the proportion of mixed seeding showed significant difference among plant yield,protein,fat,crude fiber,crude ash,Ca and P content and it significantly improved the plant yield and forage quality;also with the increase of the proportion of the Vetch,protein content increased too.The highest content of Unicast vetch reaches 22.58%.The optimal mixed seeding proportion was H 4,Fresh yield reaches 7.71 kg/m 2,protein content reached 13.66%,fat content reached 1.99%,crude fiber content reached 35.99%,crude ash content reached 6.77%,Ca：P 5.36.Thus,＇ White oats No.2 ＇ and Vetch could be promoted according to the above proportion（Vetch 40%＋ White oats No.2 60%） in the favorable climate region in Tibet,in order to improve the quality of forage grass.