Applied Biological Chemistry
- Volume 43 Issue 4
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- Pages.285-290
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- 2000
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- 2468-0834(pISSN)
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- 2468-0842(eISSN)
Runoff Characteristics of N and P by Rainfall in Paddy Field
논에서 강우에 의한 질소와 인산의 유출특성
- Cho, Jae-Young (Department Agricultural Chemistry, Chonbuk National University) ;
- Choi, Jin-Kyu (Department Agricultural Engineering, Chonbuk National University) ;
- Son, Jae-Kwon (Department Agricultural Engineering, Chonbuk National University) ;
- Han, Kang-Wan (Department Agricultural Chemistry, Chonbuk National University)
- Published : 2000.11.30
Abstract
This research was carried out to investigate the runoff pattern of nutrients by rainfall from the paddy field located at the southwest of Korea. Effective rainfalls were 17.0 and 21.2 mm for irrigation and non-irrigation period, respectively. The first runoff in paddy field was 6.3-33.7 mm (average=12.9 mm) and 5.9-12.5 mm (9.2 mm) for irrigation and non-irrigation period, respectively. And runoff ratio was 0.59-1.36 and 0.57-0.86 for irrigation and non-irrigation period, respectively. During irrigation and non-irrigation period, the outflow increased significantly with the precipitation. Pattern of precipitation-runoff differed between irrigation and non-irrigation period, as affected by precipitation intensity, hydrological condition, and cropping. There existed a linear relationship between the runoff loading of N and P and precipitation. During the irrigation and non-irrigation period, runoff loadings of N and P were not significantly different. However, there was significant difference in case of total suspended solids.
본 연구는 논에서 강우에 의한 질소와 인산의 유출특성을 조사하였다. 이를 위하여 농업이외의 오염원이 비교적 적은 전라북도 진안군 마령면 평지리 일대
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