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.
在顶坛花椒的不同年龄阶段，约两种左右枝级的叶片面积是植株总叶面积的主要组成部分。
The leaf area of two different grades branch is mainly proportion of total leaf area in different age period.
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.
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.
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.
以小麦群体绿色面积和绿色叶面积指标信息的获取为例，研究了基于图像信息构建自学习BP神经网络识别模型的技术。
A recognition system based on self learning BP neural network for feature data of wheat population images, such as total green areas and leaves areas was designed in this paper.
为了便于测定叶面积系数和生产率，编制了有使用价值的叶面积表。
To measure the leaf area coefficient and productivity more conveniently, this paper draws up an useful leaf area table.
叶面积比率的生物学特征最为明显，冬小麦返青到拔节期间的叶面积比率最大，拔节之后，叶面积比率逐渐下降，在冬小麦乳熟期前后达到最小。
The most distinctive biological feature is the Leaf Area Ratio(LAR), it is higher in former phase and lower in later, and decline to its smallest around the period of Milky Ripeness.
结果表明：脱毒马铃薯的群体光合速率、群体叶源量、干物重量、叶面积重量、叶面积系数均优于未脱毒处理。
The results showed the mass photosynthetic rate, mass leaf source amount, dry matter weight, leaf areas weight and index of virus-free potato were superior to that of potato.
子叶叶面积大小是鉴定棉花产量性状的早期形态指标，在同一类型棉花品种中，子叶叶面积与单铃籽棉重存在正相关。
Cotyledon area was an index of yield in early growth period of cotton and existed positive correlation to seed cotton weight per boll.
该方法适用于对多种植物叶面积进行活体或采摘后的精确测量，尤其适于大量叶面积的测量工作。
This new method was suitable for accurate measuring of many kinds of plant leaf area whether it was the living leaf or it was picked up, especially for large amount of leaf area.
揭膜处理叶面积最大，不盖膜处理烟株的叶面积最小。
The leaf area was largest under removing plastic treatment, while that was least under the unplastic-mulching treatment.
叶面积指数随林分密度的增加而增加，在相同密度条件下阳坡的叶面积指数大于阴坡，且密度愈大两者相差愈大。
It was larger in sunny slope than in shady slope under the similar density, and the index gap between different slope increased with the increase of stand density.
进而导致比叶面积，比同化枝长度，光吸收面积和光利用效率增加。
The results indicated that low-light conditions limited the normal growth of A. sparsifolia.
进而导致比叶面积，比同化枝长度，光吸收面积和光利用效率增加。
The results indicated that low-light conditions limited the normal growth of A. sparsifolia.
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