雨棚是根据相对于墙体面积的叶面积指数(LAI)来测量的；每单位LAI，日照减少约一半。
Canopy is measured according to leaf-area-index (LAI) relative to wall area; for each unit of LAI, sunlight decreases by about half.
由与叶面积显著相关的多个性状组成的选择指数，选择的相对效率最高。
The selection index made up of several properties and conditions remarkably correlative with the leaf area has the highest relative efficiency of selection.
由与叶面积显著相关的多个性状组成的选择指数，选择的相对效率最高。
The selection index made up of several properties and conditions remarkably correlative with the leaf area has the highest relative efficiency of selection.
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