鲁北滨海地区引种豆科牧草的灰色关联度分析

试验在鲁北滨海地区对经一般观察后初步入选的１４种豆科牧草进行了观察，并采用灰色关联度分析法以干草产量、鲜草产量、繁殖系数、折干率、叶量率、生长速度为主要指标进行综合评价。结果表明：综合性状最好的豆科牧草是草木樨属牧草，其中白花草木樨尤为突出；其次为沙打旺和美国苜蓿，也是适于鲁北滨海地区种植的豆科牧草。

GREY RALATIONAL GRADE ANALYSIS IN INTRODUCED LEGUME FORAGE PLANTS IN SALINE SEACOAST AREAS ALONG SHANDONG PROVINCE BY NORTH

Fourteen legume forage plants selected in use for evaluation were indicated in the paper.The mathematical method of grey relational grade analysis had been racticed by us along saline seacoast areas in North Shandong province.Hay yield,green forage yield,reproduction index,ratio of dry matter,ratio of leaf to stem,growing rate were adopted as main indexes for comprehensive evaluation.The results showed that Melilotus spp .are the best of all for animal feeding,and the second as well as the third are then enumerated for Astragalus adsurgens Pall.and purple alfalfa ( Medicago sativa L.).They are regarded by us as comprehensively valuable legume forage plant spp. grown on those rangelands along the seacoast areas in shandong by north.