1) Leaf area index
叶面积系数
1.
To peanut that the photosynthetic characteristic to proceed the first step research ,the theory basis is provided for some technical measures of highyielding cultivation to peanut through testing arid analyzing some physiology indices such as the leaf area index , the chlorophyllous content, the ohotosythetic rate , the dry substance auumulation and so on in the growth stage of peanut.
对高产花生的光合特性进行初步研究,在花生生育期间,通过对叶面积系数、叶绿素含量、光合强度、干物质积累等生理指标的测定分析,为花生高产栽培的一些技术措施提供理论依据。
2.
Net photosynthetic rate (Pn), total chlorophyll content (Tchl), chlorophyll a (chla), chlorophyll b (chlb) and leaf area index (LAI) went up in the growing process of the plants, reached the maximum value and declined thereafter.
结果表明 ,甘薯品种的净光合速率 (Pn)、总叶绿素含量 (Tchl)、叶绿素a含量 (chla)、叶绿素b含量 (chlb)、叶面积系数 (LAI)随生长进程先上升 ,达到最大值 ,然后逐渐下降 ,蔓薯比值 (T/R值 )随生长进程呈下降趋势。
2) LAI
叶面积系数
1.
LAI,chlorophyll content, photosynthesis of single leaf,accumulation and distribution of dry matter at different and treatments were measured.
方法:以白首乌为材料,在生育期内人工摘除花蕾、果实或摘除主茎分枝,以不进行处理的为对照,测定不同处理和时期的叶面积系数,叶片叶绿素含量及单叶净光合速率,干物质积累等指标。
2.
The results indicated that: Increasing plant density increased mean leaf area index(LAI) and total dry matter before primary flowering date, but different densities could maintain the same level on the growth rate of leaf, diameter of stem, leaf area/plant and acculation of dry matter.
在水肥条件适宜的情况下，新疆次宜棉区新陆早７号的种植密度在１２×１０４～２４×１０４株·ｈｍ－２之间，随密度增加，苗期的出叶速度、茎粗、单株叶面积和干物质积累基本相同，但叶面积系数和单位面积干物量成正比增长；初花后，群体出现自身调节作用，随密度增加，以缩小个体来稳定群体，表现单株叶面积、茎粗、干物重、成铃数、单铃重下降，出叶速度减慢，衣分则保持不变，单位面积总铃数、总干物量上升。
3) Leaf area index (LAI)
叶面积系数
1.
The result showed that the light distribution in the canopy were obviously affected by the leaf area index (LAI), the structure of canopy, solar radiation and its apparent movement, etc.
结果表明:梨树叶幕光能分布状况直接受叶面积系数、树冠结构、太阳位置及光强的影响。
4) leaf area coefficient
叶面积系数
1.
The effects of fertilization on the leaf area coefficient,on absorption of nitrogen,phosphorus and potassium,and on accumulation and distribution of dry matter during all stages and economic yield of spring maize were studied.
研究了施肥对春玉米叶面积系数，氮、磷、钾吸收状况及干物质积累分配和经济产量的影响，并探讨了上述诸生长因素与经济产量之间的关系。
5) leaf area correction coefficient
叶面积修正系数
1.
The upper leaf area correction coefficients of controlled irrigation managements were lower than the ones of the traditional irrigation.
叶面积修正系数直接决定着长宽修正系数法测量叶面积的精确程度。
6) LAI
叶面积指数
1.
Study on estimation of urban forest LAI models based on SPOT5;
基于SPOT5遥感影像的城市森林叶面积指数反演
2.
Analysis of Topographical Effect on Retrieval of LAI from Remotely Sensed Data;
遥感提取叶面积指数的地形影响分析
3.
The Study on Multi-spectral Remote Sensing Estimation Models about LAI of Rice;
水稻叶面积指数的多光谱遥感估算模型研究
补充资料：受光叶面积指数测定
受光叶面积指数测定
determination of lighted leaf area index
shouguang yem一anji zhishu eeding受光叶面积指数测定(determination oflighted leaf area index)生长状况观测项目之一，是对受到太阳直接辐射照射的叶面积(用叶面积指数来表示)的侧定(见叶面积测定)。测定目的在于鉴定光能在作物群体中分布的合理性和有效性;预测其对产量的影响。测定时首先分层测定受光面积率。一般采用棒测法，即用一根110厘米长的木尺，其上每隔1厘米点一红油漆点(共100个点)，将它水平放置在欲测的层次高度上，与作物行间垂直，并固定在支架上，随后数它被阳光直接照射的亮点(红漆点)数。在同一高度上，用同样的方法，每间隔10厘米左右移动测尺一次，共测十次，算出总亮点数，然后除以1000，便求得该层受光面积率(百分率)。中国已研制出直射透光率测定仪，其棒状感应器为1米长，由100个感应器件组成，用它在作物群体内进行快速扫描，直射光透光率由数码直接显示。作物冠层的垂直分层，对于矮秆密植作物(如稻、麦)，一般从地面向上每10厘米为一层，而稀植高秆作物(如玉米)，一般每20一30厘米为一层。测定时，按照划分好的垂直层次标志，由上向下逐层分别测得各层的受光面积率。其次，分别测出各垂直层次间的叶面积密度(见叶面积密度测定)。最后，求算群体受光叶面积指数。某层叶面积密度乘以该层的受光面积率就是该层的受光叶面积指数。(林家栋)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条