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http://dx.doi.org/10.5532/KJAFM.2020.22.4.258

Evaluating Cultivation Environment and Rice Productivity under Different Types of Agrivoltaics  

Ban, Ho-Young (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Jeong, Jae-Hyeok (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Hwang, Woon-Ha (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Lee, Hyeon-Seok (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Yang, Seo-Yeong (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Choi, Myoung-Goo (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Lee, Chung-Keun (Division of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administrarion)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.22, no.4, 2020 , pp. 258-267 More about this Journal
Abstract
The agrivoltaic can produce electricity and grow crops on fields at the same time. It is necessary to analyze the cultivation environment and evaluate the crop productivity under agrivoltaic because the shading point changes according to structure of agrivoltaic and sun's position. Two types of "fixing" and "tracing" agrivoltaic were installed, and a rice cultivation experiment was conducted in the fields under each agrivoltaic and without shading (control). "Hyunpoombyeo" was transplanted on June 7, 2019, and grown with fertilization of 9.0-4.5-5.7 kg/10a (N-P-K). Fifteen weather stations were installed under each agrivoltaic to measure solar radiation and temperature, and yield and yield-related elements were investigated by points. The accumulated solar radiation during the rice growing season in fixing was no much difference between points, and that in tracing was much difference between points. However, the average solar radiations of two agrivoltaics were similar. The mean temperature, yield, and yield-related elements showed a significant difference for the shading rate, and decreased with increasing the shading rate except ripening grain rate and 1000 grain weight of fixing agrivoltaic. In the relationship between shading rate and yield, fixing and tracing were fitted to a logistic equation and a simple linear equation, respectively, and showed a high correlation (tracing: R2 = 0.62, fixing: R2 = 0.73). The shading rate variation by point for two types was large despite similar yield variation. Thus, it needs to be more closely examined the relationship of the shading rate for a specific period rather than the shading rate during the whole growing season.
Keywords
Agrivoltaic; Rice; Temperature; Solar radiation; Yield; Yield-related elements;
Citations & Related Records
Times Cited By KSCI : 14  (Citation Analysis)
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