지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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The objective of this research was to experimentally test the effect of tillage methods on the reduction of runoff, non-point source (NPS) pollution load, sediment and discharge under a rainfall simulation. We used the runoff plots of 5 m×30 m (L×W) in size.
Experimental treatments were conventional tillage (CT), CT-rice straw bundle (CT-RSB) and two no-till (NT) plots; slope of 3 % or 8 % ; and rainfall intensity of 30 mm/hr. The rainfall simulation was conducted to three times. The time to initial runoff from NT plots was less than that from CT plots regardless of the slope and it was delayed about 65～90 % compared to that of CT plot.
And sediment discharge of 8 % slope reduced to 55 % compared to CT plot. But the sediment discharge was not occurred at 3 %slope. The NT and CT-RSB methods have a great possibility of reducing runoff and NPS pollution loads. Runoff rate of NT plots was significantly lower than those of CT plot. The average NPS pollution loads of the NT plots and CT-RSB plot reduced about 55～80 % and 2.1～40 % compared to those of the CT plots, respectively. It was also shown that runoff and NPS pollution loads reduction by NT method could be very significant and contribute to improve the water quality of streams in agricultural regions. It was concluded that the use of NT method on agricultural fields could reduce soil erosion and muddy runoff significantly and help improve the water quality and aquatic ecosystem.
목차
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참고문헌 (21)
참고문헌 신청
Armand, C. Bockstaller / 2009 / Runoff generation related to intra-field soil surface characteristics variability application to conservation tillage context / Soil & Til
Clausen, J. C. / 1996 / Paired watershed comparison of tillage effects on runoff, sediment, and pesticide losses / Journal of Environment Quality 25 : 1000 ~ 1007
Conservation Technology Information Center / 2005 / Crop Residue Management Survey.
Delaune, P. B. / 2012 / Impact of tillage on runoff in long term no-till wheat system / Soil & Tillage Research 124 : 32 ~ 35
Franklin, D. H. / 2012 / Nutrient losses in runoff from conventional and no-till pearl millet on pre-wetted Ultisols fertilized with broiler litter / Agricultural Water Management
Clausen, J. C. / 1996 / Paired watershed comparison of tillage effects on runoff, sediment, and pesticide losses / Journal of Environment Quality 25 : 1000 ~ 1007
Conservation Technology Information Center / 2005 / Crop Residue Management Survey.
Delaune, P. B. / 2012 / Impact of tillage on runoff in long term no-till wheat system / Soil & Tillage Research 124 : 32 ~ 35
Franklin, D. H. / 2012 / Nutrient losses in runoff from conventional and no-till pearl millet on pre-wetted Ultisols fertilized with broiler litter / Agricultural Water Management
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