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http://dx.doi.org/10.5532/KJAFM.2020.22.1.20

Determination of the Temperature Increasing Value of Seedling Nursery Period for Oryza2000 Model to Applicate Grid Weather Data  

Kim, Junhwan (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Sang, Wangyu (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Shin, Pyeong (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Baek, Jaekyeong (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Kwon, Dongwon (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Lee, Yunho (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Cho, Jung-Il (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Seo, Myungchul (Divison of Crop Physiology and Production, National Institute of Crop Science, Rural Development Administration)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.22, no.1, 2020 , pp. 20-25 More about this Journal
Abstract
Spatial simulation of crop growth often requires application of management conditions to each cell. In particular, it is of great importance to determine the temperature conditions during the nursery period for rice seedlings, which would affect heading date projections. The objective of this study was to determine the value of TMPSB, which is the parameter of ORYZA2000 model to represent temperature increase under a plastic tunnel during the rice seedling periods. Candidate values of TMPSB including 0℃, 2℃, 5℃, 7℃ and 9℃ were used to simulate rice growth and yield. Planting dates were set from mid-April to mid-June. The simulations were performed at four sites including Cheorwon, Suwon, Seosan, and Gwangju where climate conditions at rice fields common in Korea can be represented. It was found that the TMPSB values of 0℃ and 2℃ resulted in a large variation of heading date due to low temperature occurred in mid-April. When the TMPSB value was >7℃, the variation of heading date was relatively small. Still, the TMPSB value of 5℃ resulted in the least variation of heading date for all the planting dates. Our results suggested that the TMPSB value of 5℃ would help reasonable assessment of climate change impact on rice production when high resolution gridded weather data are used as inputs to ORYZA2000 model over South Korea.
Keywords
Oryza2000; Crop growth model; Grid data; TMPSB;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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