有效辐射

2001年6月初剪枝后，5龄和9龄南酸枣间作系统花生相对光合有效辐射分别从5月份的79.2%和63.4%增加到88.7%和67.5%；

After tree pruning in early June 2001 , relative PAR index of the peanut crops was increased to 88.7 % and 67.5 % from 79.2 % and 63.4 % in May in the 5-year-old and 9-year-old Choerospondias axillaris alley cropping systems , respectively .

在非洲南部Bloemfontein光合有效辐射与明朗指数之间的关系

Relationships between photosynthetically active radiation and clearness index at Bloemfontein , South Africa .

模拟光合有效辐射每小时频率分布函数项建议

Proposal of a function for modelling the hourly frequency distributions of photosynthetically active radiation .

水稻对CO2的同化吸收与光合有效辐射、气温有极显著相关关系；

Assimilation of CO2 by rice is significantly correlated with photosynthetically active radiation and temperature .

影响河北核桃净光合速率日变化的主要因子是光合有效辐射、叶片温度及胞间CO2浓度。

The diurnal variation of Pn in hebei-walnut was influenced by light intensity , leaf temperature and intercellular CO2 concentration .

将稻田CO2通量与光合有效辐射、气温进行回归分析，以掌握两者对水稻CO2同化消耗的影响。

The response of CO2 flux to photosynthetically active radiation and temperature was also studied through regressive analysis .

基于MODIS数据估算晴空陆地光合有效辐射

Estimation of Land Photosynthetically Active Radiation in Clear Sky Using MODIS

光合有效辐射（PAR）的气候学研究

A climatological study on the photosynthetically active radiation

光合有效辐射和CO2浓度是对净光合速率和叶片蒸腾速率影响最强烈的环境因子。

The most important environmental influencing factors on Pn and Tr were photosynthetic active radiation ( PAR ) and CO2 concentration .

与此同时，覆膜也降低了芜菁微环境中大气的CO2浓度，叶室和叶片温度，改变了光合有效辐射。

In addition , plastic mulching cultivation reduced the CO2 density , air humidity , air and leaves temperature and photosynthesis effective radiation .

光合有效辐射强度和大气CO2浓度是影响复合系统玉米、大豆、绿豆和辣椒光合速率的主要环境因子。

PAR and atmospheric CO2 concentration were two main factors influencing the photosynthetic rate of corn , soybean , mung bean and pepper .

潜热通量、显热通量、净辐射、光合有效辐射均与CO2通量呈极显著正相关。

Latent heat flux , sensible heat flux , net radiation flux and photosynthetic active radiation are all significantly positively related with CO2 flux .

它允许在单个高功率微波源的基础上将有效辐射功率提高n倍甚至几十倍，对高功率微波技术的发展具有深远的意义。

It can enhance efficient radiation power to n times or more over based on the single high power microwave oscillator , so it 's meaningful to the development of HPM .

秋季净光合速率呈双峰曲线，影响光合速率的主要因子为光合有效辐射、蒸腾速率、胞间CO2浓度和大气水气压亏缺；

The photosynthetic rate showed a double-peak curve in autumn , the major factors affecting the photosynthetic rate were E , PAR , Ci and VPDL .

结果表明，用光合有效辐射和蒸腾速率对净光合速率矫正的效果最好，其次为CO2增量和叶室内温度。

The effect is best that photosynthetic rate is adjusted by PAR and transpiration rate then is that adjusted by Delta CO2 and leaf chamber temperature .

对CO2通量与光合有效辐射的关系分析表明：白天稻田吸收的CO2通量与到达地面的光合有效辐射存在着显著的负相关关系。

In addition , the relationship between daytime absorption of CO2 flux and Photosynthetically-active radiation is investigated for the rice paddy , and resulting a negative correlation .

Pn与Tr、Gs极显著正相关；影响连翘叶片净光合速率的主要环境因子为光合有效辐射PAR。

Pn was significantly positively related with transpiration rate and stomatal conductance . The principal environmental factors affecting Pn were PAR .

日NEE密度受光合作用有效辐射（PAR）、风速的影响很大。

Diurnal NEE density is mostly influenced by photosynthetically active radiation ( PAR ) and wind speed .

在温室番茄叶面积和干物质生产子模型中，首次提出了预测叶面积的综合光温指标&辐热积。辐热积指的是相对热效应与光合有效辐射PAR的乘积。

In the leaf area and dry matter production submodel , the Product of thermal effectiveness and PAR ( TEP ) was proposed .

本文的主要研究目的是建立玉米冠层内光合有效辐射（PhotosyntheticallyActiveRadiation，PAR）三维空间分布的模拟模型。

For modelling of three dimensional distribution of Photosynthetically Active Radiation ( PAR ) in crop canopy , the important contents of this thesis are as following .

青藏高原地区OLR与地面有效辐射关系的分析

Analysis of the relationship between the OLR and the surface effective radiation over the Qinghai-Xizang Plateau

分析了不同月份典型天气（晴天和阴天）条件下不同冠层部位的光合有效辐射（PAR）的分布情况。

Analyzed photosynthetically active radiation ( PAR ) distribution of different crown layers parts on different months classic weather conditions ( Cloudy Or Sunny ) .

在春节催花牡丹温室生态因子中CO2浓度较光合有效辐射对净光合速率有相对较高的灰色关联度。

Between environmental CO2 concentration and photosynthetic available radiation , environmental CO2 concentration has the relative higher The grey correlation degree on factors that influence changes of photosynthetic rate in solar greenhouse .

光合有效辐射（PAR）是影响林下参Pn的主要因素，Pn与PAR存在显著的对数关系，r2≥0.808；

Photosynthetically available radiation ( PAR ) was the main influencing factor on Pn and logarithmic relation between Pn and PAR was significant , r2 ≥ 0.808 ;

在重庆自然条件下，环境变量因子对柑橘叶片光合速率估算精度的影响程度依次为光合有效辐射气孔导度叶片温度空气CO2浓度。

Observation data from the environmental group variables on citrus leaf photosynthesis rate show the influence degree of accuracy followed by ( photosynthetic active radiation ) PAR stomata conductance leaf temperature atmospheric CO2 concentration .

偏相关分析表明光合有效辐射（PAR）和大气温度（Ta）是决定其净光合速率的主要环境因子。

Partial correlation analysis showed that the major environmental factors of net photosynthetic rates were the photosynthetic active radiation ( PAR ) and air temperature ( Ta ) . 2 .

其中，气孔导度、蒸腾速率、叶温、光合有效辐射及基于叶温的蒸汽压亏缺是大豆光合作用的促进因子；细胞间CO2浓度、空气中CO2、空气相对湿度为主要的限制因子。

Stomata conductance , transpiration rate , temperature of leaf , photosynthetic was promoting factors for bean leaf ; intercellular CO2 concentration , CO2 of air and air relative humidity were mainly limiting factors . 3 .

地面有效辐射（ELR）无明显的季节变化。

Surface effective radiation ( ELR ) had no significant seasonal variation .

对乌拉苔草叶片的蒸腾速率、气孔阻力、光合有效辐射、空气温度、叶片温度、相对湿度、风速及大气中CO2的体积分数等指标进行了测定。

The transpiration rate , stomatal resistance , temperature of leaves of Carex meyeriana as well as photosynthetically available radiation ( PAR ), air temperature , relative humidity , wind speed , atmospheric CO_2 concentration were determined .

6沟播小麦的CO2通量比平作畦麦，相对增加9%-16%，且随着垄宽的增加而增加。但对光合有效辐射的吸收有减少的趋势。

As compared with ( FC ) wheat , the CO_2 flux in furrow-drilling wheat increased by 9 % - 16 % , and increases with widening of the ridge , but meanwhile the absorption of photosynthesis-effective radiation exhibited a decrease trend .