지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The objective of the research was to describe the effect of straw mat cover and soil amendments on the reduction of runoff andnon-point source load from steep sloped highland agricultural fields. Four 5×30 m plots on sandy loam soil with 28 % slope wereprepared. Experimental treatments were bare (control), rice straw mat cover (3,000 kg/ha) (S), PAM (5 kg/ha)＋Gypsum (1 ton/ha)(PG) and rice straw mat cover＋PAM＋Gypsum (SPG). A variety of lettuce was cultivated and runoff was monitored during agrowing season in 2011. Natural monitoring was conducted to three times. Runoff rate of S, PG and SPG plots were significantlylower than those of control plot. Especially, the runoff rate is zero in SPG plot at a first rainfall events. The reduction rate ofrunoff from the S, PG and SPG plots was 30.8 %, 29.0 % and 81.8 % compared to control plots, respectively. The reduction rateof NPS pollution load of S, PG and SPG was ranged of 50～90 %, 30～70 % and 90～100 %, respectively. Yield of lettuce fromS, PG and SPG plots was respectively 400 (567 kg/ha), 320 (453 kg/ha) and 760 (1,067 kg/ha) that of compared to control plotsgreater than that from control plots (140 kg/ha). We speculated that the experimental treated plots could hold more nutrients andmoisture than the control and helped the crop grow healthier. When analyzing the above results, in terms of reduction of runoff andNPS pollution load and crop yields, SPG experimental treatment had the best effect. It was concluded that the use of rice strawmats cover and soil amendments on soil surface could not only reduce the NPS pollution loads in receiving waters but also helpincrease the crop yield.
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참고문헌 (25)
참고문헌 신청
Barvenik, F. W. / 1994 / Polyacrylamide characteristics related to soil applications / Soil Science 158 : 235 ~ 243
Bjorneberg, F. L. / 2003 / Using polyacrylamide with sprinkler irrigation to improve infiltration / Journal of Soil and Water Conservation 58 : 283 ~ 289
Boardman, J. / 1990 / Soil erosion on agricultural land / John Wiley and Sons
Cerda, A. / 2007 / Soil water erosion on road enbankments in eastern Spain / Science of the Total Environment 378 : 151 ~ 155
Choi, J. D. / 1997 / Effect of Rural Watershed Management on the Discharge of NPS Pollutants to Streams / Inst. of Rural Dev., Kangwon Nat’l Univ 1 (1) : 91 ~ 107
Bjorneberg, F. L. / 2003 / Using polyacrylamide with sprinkler irrigation to improve infiltration / Journal of Soil and Water Conservation 58 : 283 ~ 289
Boardman, J. / 1990 / Soil erosion on agricultural land / John Wiley and Sons
Cerda, A. / 2007 / Soil water erosion on road enbankments in eastern Spain / Science of the Total Environment 378 : 151 ~ 155
Choi, J. D. / 1997 / Effect of Rural Watershed Management on the Discharge of NPS Pollutants to Streams / Inst. of Rural Dev., Kangwon Nat’l Univ 1 (1) : 91 ~ 107
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