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草业学报 ›› 2012, Vol. 21 ›› Issue (2): 196-204.

• 研究论文 • 上一篇    下一篇

应用灰色关联度分析法综合评价啃食强度对紫穗槐营养价值的影响

郭霞,刘雪云,周志宇*,粱坤伦,王瑞   

  1. 兰州大学草地农业科技学院,甘肃 兰州 730020
  • 收稿日期:2010-12-06 出版日期:2012-02-25 发布日期:2012-04-20
  • 通讯作者: E-mail:zyzhou@lzu.edu.cn
  • 作者简介:郭霞(1986-),女,甘肃平凉人,在读硕士。 E-mail:guoxia09@lzu.cn
  • 基金资助:
    国家重点基础研究发展规划项目(973项目)(2007CB108903)和国家自然科学基金项目(30800801)资助。

Applying grey correlative degree analysis to comprehensively evaluate the influence of different defoliation intensities on nutritional value of Amorpha fruticosa

GUO Xia, LIU Xue-yun, ZHOU Zhi-yu, LIANG Kun-lun, WANG Rui   

  1. College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
  • Received:2010-12-06 Online:2012-02-25 Published:2012-04-20

摘要: 应用灰色关联度分析法,对5组人工模拟不同啃食强度,20%,40%,60%,80%,100%(占植株地上部分的比例)下紫穗槐叶、茎,从7个营养指标,粗灰分(Ash)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、可溶性糖(WSC)、粗蛋白质(CP)、磷(P)、钾(K)间的相互关系进行了综合分析, 通过对不同啃食强度处理的关联度比较,探讨啃食强度对紫穗槐营养品质的影响。结果表明,紫穗槐在啃食强度40%时,叶、茎的加权关联度分别为0.781 2和0.651 3,大于其他啃食强度处理,即具有最佳的营养价值。

Abstract: The influences of nutritional quality on Amorpha fruticosa were studied using five simulated defoliation intensities (20%, 40%, 60%, 80%, and 100% proportion of aboveground vegetation). The grey correlation degree method was used to comprehensively analyze seven nutritional indexes: crude ash (Ash), neutral detergent fiber (NDF), acid detergent fiber (ADF), water-soluble sugar (WSC), crude protein (CP), phosphorus (P), and potassium (K). When the defoliation intensity of A. fruticosa was 40%, the weighted grey correlation degree of leaves and stems was 0.781 2 and 0.651 3, respectively. This was larger than that of the other defoliation intensities. A. fruticosa had the best nutritional value with the 40% defoliation intensity treatment.

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