Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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The Analysis of Nitrogen Supply Amount in Paddy Fields by Rainfall During Cropping and Non-Cropping Period

영농기와 비영농기에 강우에 의해 논으로 유입되는 질소공급량 분석

  • Choi, DongHo (Climate Change and Agroecology Division, National Institute of Agricultural Science) ;
  • Choi, Soon-Kun (Climate Change and Agroecology Division, National Institute of Agricultural Science) ;
  • Hur, Seung-Oh (Climate Change and Agroecology Division, National Institute of Agricultural Science) ;
  • Hong, Seung-Chang (Climate Change and Agroecology Division, National Institute of Agricultural Science) ;
  • Kim, Min-Kyeong (International Technology Cooperation Center(ITCC), Rural Development Administration(RDA))
  • Received : 2018.01.24
  • Accepted : 2018.04.03
  • Published : 2018.05.31
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Abstract

In this study, we conducted to analyze and quantify the amount of nitrogen supply into the rice paddies from the rainfall during cropping and non-crop periods. Rainfall monitoring conducted 85 times from June 2015 to December 2017. Nitrogen supply of cropping season ranged from 5.37 to 7.70 kg/ha, while non-cropping season were supplied from 3.97 to 4.42 kg/ha. The supply of T-N in the crop period was more than 60% of the total supply. And as a result of analyzing the correlation between the characteristics of rainfall and the supply amount, nitrogen concentrations in rainfall were decreased with increasing rainfall, but the supply amount was increased. Therefore, efforts should be made to increase the rainfall utilization and to increase the nitrogen supply of crops by increasing rainfall storage through drainage management.

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References

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