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Silicon pyranometer has wider application in radiation observation and solar energy resources evaluation because of its fast response time, small size, low price and identical spectral range with photovoltaic cells. In order to guarantee the accuracy and the reliability of the observation data, various performances of silicon pyranometer are tested according to its specification. The sensitivity is...
Several nitrogen (N) field experiments were carried out in Nanjing and Anyang, China, to study the dynamic characteristics of biomass accumulation and N uptake, and to define the dilution curve for critical N concentration in cotton reproductive organ over the growth period. The results show that the total biomass and N accumulation were affected significantly by the rate of N application, exhibiting...
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