中文摘要：

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0．7812和0．6513，大于其他啃食强度处理，即具有最佳的营养价值。

英文摘要：

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.