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  

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

作　　者：郭霞[1] 刘雪云[1] 周志宇[1] 粱坤伦[1] 王瑞[1] 

机构地区：[1]兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业学报》2012年第2期196-204,共9页Acta Prataculturae Sinica

基　　金：国家重点基础研究发展规划项目(973项目)(2007CB108903);国家自然科学基金项目(30800801)资助

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。The influences of nutritional quality on Amorpha fruticosa were studied using five simulated defolia- tion intensities （20%, 40%, 60%, 80%, and 100% proportion of aboveground vegetation）. The grey correla- tion 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）, phos- phorus （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.

关 键 词：紫穗槐 灰色关联度 啃食强度 营养价值 

分 类 号：S541.9[农业科学—作物学]