粒叶比是衡量单位叶面积光合生产力的综合性状。
The grain-leaf ratio is a comprehensive trait estimating photosynthetic productivity of per unit leaf area.
其它光质下单位叶面积细胞数目依次为黄、红、白和绿光下的叶片。
Generally speaking, the leaves grown in yellow light had more number of mesophyll cells than those grown in red, white, and green light.
土壤干旱引起单位叶面积色素含量降低，但却引起单位叶鲜重色素含量的增加。
Soil drying decreased pigments contents on leaf-area basis, but increased on fresh-leaf-weight basis.
因此，以网室内单位叶面积产卵量为指标基本上能反映出黑刺粉虱对不同茶树品种的寄主选择性。
Therefore, the host preference of Alewocanthus spiniferus to different tea varieties could be basically reflected by the oviposition number per unit in the net laboratory.
结果表明：经水分胁迫的大豆叶片气孔密度增加，气孔开口大小和单位叶面积气孔相对面积减小。
The results showed that stomatal density of soybean leaves increased, stomatal apertura and relative stomatal area per leave area decreased under water stress.
单位叶面积的叶绿素素含量在幼叶和老叶较低而成熟叶中较高，类胡萝卜素随着叶龄的增加而增加。
Chlorophyll contents were less in young and old leaves than in mature leaves, while carotenoids were increased with leaf age.
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.
这个新指标——绿色容积率(GPR)是以一个通常被称作叶面积指数(LAI)的生物参数作为基础，该参数被定义为每单位地块面积上的单面叶面积总和。
This new metric, the green plot ratio (GPR), is based on a common biological parameter called the leaf area index (LAI), which is defined as the single-side leaf area per unit ground area.
通过2002～2003年对青贮专用型玉米不同种植密度下，单株和群体叶面积、干物质积累及单位面积生物产量变化的研究，探讨单株和群体之间的相互影响。
Study on the effect of different densities of silage corn to the leaf area, dry matter and fresh yield of both single plant and population in 2002~2003.
通过2002～2003年对青贮专用型玉米不同种植密度下，单株和群体叶面积、干物质积累及单位面积生物产量变化的研究，探讨单株和群体之间的相互影响。
Study on the effect of different densities of silage corn to the leaf area, dry matter and fresh yield of both single plant and population in 2002~2003.
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