نتایج جستجو برای: photosynthetically active radiation

تعداد نتایج: 668272  

Journal: :چغندرقند 0
سعید صادقزاده حمایتی دانش آموخته دکترای دانشگاه آزاد اسلامی واحد علوم و تحقیقات

in order to evaluate the effects of sugar beet sowing date, planting density and cultivar on solar radiation interception, the present study was conducted in kamal-abad agricultural research station of sugar beet seed institute (sbsi) in 2005 and 2006. the experiment arranged was in split-split plots based on randomized complete block design (rcbd) with three replications. the sowing date, plan...

Journal: :Remote Sensing 2013
Liangyun Liu Dailiang Peng Yong Hu Quanjun Jiao

The fraction of absorbed photosynthetically active radiation (FPAR) is a key parameter in describing the exchange of fluxes of energy, mass and momentum between the surface and atmosphere. In this study, we present a method to measure FPAR using a digital camera and a reference panel. A digital camera was used to capture color images of low canopy vegetation, which contained a reference panel i...

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