The each leaf area of perennialryegrass are more obviously influenced by the seasonal change.
黑麦草的单叶面积受季节影响较大。
2
Seeing from the whole evaluation period, the average green degree of Kentucky bluegrass is higher than that of tall fescue and perennialryegrass.
从整个评定时期看，草地早熟禾的平均绿度比高羊茅和多年生黑麦草高。
3
The turnover of lamina tissue of perennialryegrass was systematically studied through cutting experiment by the application of the theory and methods of the tissue turnover.