경사밭 고랑멀칭 방법에 따른 비점오염 저감효과 평가
Evaluation of Furrow Mulching Methods for Controlling Non-Point Source Pollution Load from a Sloped Upland
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South Korea’s agricultural nitrogen balance and phosphorus balance rank first and second, respectively, among OECD countries, and proper nutrientmanagement is required to preserve the water quality of rivers and lakes. This study evaluates the effects of furrow mulching on the reduction ofnon-point source pollution (NPS) load from a sloped upland. The study site was Wanju-gun, Jeollabuk-do, and the survey period was from 2018 to2019. The slope of the testbed was 13%, and the soil type was sandy loam. The cropping system consisted of maize-autumn Chinese cabbage rotation. The testbed was composed of bare soil (bare), control (Cont.), furrow vegetation mulching (FVM), and furrow nonwoven fabric mulching (FFM) plots. Runoff was collected for each rainfall event with a 1/100 sampler, and the NPS load was calculated by measuring the concentrations of SS, T-N, andT-P. The NPS load was then analyzed for the entire monitoring and crop cultivation periods. During the monitoring period, the effect of reducing theNPS load was 1.5%∼44.5% for FVM and 13.1%∼55.2% for FFM. During the crop cultivation period, it was 1.2%∼80.5% for FVM and27.0%∼65.1% for FFM, indicating that FFM was more effective than FVM. As the NPS load was fairly high during the crop conversion period, anappropriate management method needs to be implemented during this period.
Abstract
South Korea’s agricultural nitrogen balance and phosphorus balance rank first and second, respectively, among OECD countries, and proper nutrientmanagement is required to preserve the water quality of rivers and lakes. This study evaluates the effects of furrow mulching on the reduction ofnon-point source pollution (NPS) load from a sloped upland. The study site was Wanju-gun, Jeollabuk-do, and the survey period was from 2018 to2019. The slope of the testbed was 13%, and the soil type was sandy loam. The cropping system consisted of maize-autumn Chinese cabbage rotation. The testbed was composed of bare soil (bare), control (Cont.), furrow vegetation mulching (FVM), and furrow nonwoven fabric mulching (FFM) plots. Runoff was collected for each rainfall event with a 1/100 sampler, and the NPS load was calculated by measuring the concentrations of SS, T-N, andT-P. The NPS load was then analyzed for the entire monitoring and crop cultivation periods. During the monitoring period, the effect of reducing theNPS load was 1.5%∼44.5% for FVM and 13.1%∼55.2% for FFM. During the crop cultivation period, it was 1.2%∼80.5% for FVM and27.0%∼65.1% for FFM, indicating that FFM was more effective than FVM. As the NPS load was fairly high during the crop conversion period, anappropriate management method needs to be implemented during this period.
참고문헌 (16)
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