草坪草抗寒性研究

Study On Cold-resistance Of Grasses in Grass Carpets

本试验以22种冷季型草坪草为试材,通过田间自然越冬率的调查以及-6℃、-12℃、-18℃ 3个温度人工冷冻电导率和-12℃人工冷冻失水率的测定,进行系统聚类分析,综合研究其抗寒性.结果表明:抗寒性强的草坪草有瓦巴斯、菲尔京、亨特、纳苏早熟禾和肯塔基,抗寒性较好的有爱肯妮早熟禾和紫羊茅,抗寒性一般的有霍尔特早熟禾和普通早熟禾,抗寒性较差的有巴法7851和猎狗、梯坡、胜利、爱瑞高羊茅.

The experiment takes 22 kinds of cold-resistant grass as experimental materials, cold-resistance is studied comprehensively through investigation of natural overwintering rate in the fields, determin-ation of both man-made freezining electric conductivity at 6℃, 12℃, 18℃ below zero and man-made freezing water loss rate at 12℃ below zero and systematic classification analysis. Results Show that grasses of Poa prate-nsis L.cv. Wabash, Poa pratensis L. cv. Fylkying, Poa pratensis L. cv.Kentucky have strong cold-resistance and better cold-resistance in Poa pratensis L. cv. Ikone and Festuca rubra L. cv. Red Fescue: ordinary cold-resistance in Poa pratensis L. and Poa trivialis L. cv. Common Festuca arundinacea Schreb cv. Bar Fa 7851, Festuca arundinacea Schreb cv. Houngdog, Festuca arundinacea Schreb cv. Tip, Festuca arundinacea Schreb cv. Victory and Festuca arundinacea Schreb cv. Arid have poorer cold-resistance.