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점토광물 혼합 사료 급여로 발생된 우분의 토양 시용과 질소성분의 변화
김정규(Jeong Gyu Kim),이상환(Sang Hwan Lee),이창호(Chang Ho Lee),이남주(Nam Joo Lee),손용석(Yong Suk Son),임수길(Soo Kil Lim) 한국환경농학회 1999 한국환경농학회지 Vol.18 No.4
This study was conducted to examine the change of nitrogen in soils treated by cow manure originated from the clay mineral feeding. Bentonite, zeolite, and porphyry were feeded. CEC of the porphyry showed the lowest value, 12.02 cmol/㎏, among three kinds of clay mineral. The manure treated soils were incubated at 14, 18, 22, 25℃. CEC of the manure after bentonite, zeolite, porphyry feeding were 147.5, 137.0, and 114.0 cmol(+)/㎏, respectively. These values were higher than that of non-mineral treated manure, 107.5 cmol(+)/㎏. After 8 weeks incubation, there were no significant difference in the content of NH₄^+-N, but the content of NO₃^--N in soils were in order of zeolite treated$gt;bentonite treated$gt;porphyry treated$gt;non-nimeral treated. These results suggested that the clay mineral adsorbed NH₄^+-N and prevent the loss of nitrogen from soils.
논토양에 3요소비료 시용시 이들 비료성분의 토양내 잔존 형태와 용탈에 의한 수질오염에 관한 연구
이창호,임수길 ( Chang Ho Lee,Soo Kil Lim ) 한국물환경학회 1995 한국물환경학회지 Vol.11 No.4
In order to investigate the behavior of N,P,K fertilizers applied in submerged paddy soils and the water pollution caused by these leachate, Ammonium sulfate(AS), Urea, Superphosphate(SP), Fused phosphate(FP), Potassium chloride(PC) were applied in three levels in the columns filled with silty clay loam(SiCL) and sandy loam(SL), respectively. Distributions of N,P,K in soil were detertmined, and concentrations of N,P,K in leachate were also analyzed, separately. The obtained results were summarized as follows. In terms of residual amounts in soils, AS induced decreasing amount NH₄-N from top to bottom whereas Urea revealed reverse phenomenon. SL soil rather than SiCL soil and AS rather than Urea had a much effect on the water pollution. Residual amount of NO₃-N showed higher amount in SL soil than in SiCL soil regardless of fertilizer and application rates. In SiCL soil, main source of soluble phosphorus was SP whereas FP was the one in SL soil. Conc. of phosphorus in leachate were very small due to high adsorption ability of soils for phosphorus, the soil pollution was more considered than the water pollution. Leaching conc. of K^+ was higher from SL soil than SiCL soil, leaching conc. of K^+ increased as fertilizer application rates increasing on both SiCL and SL soils. Leaching concentrations(Y) of K^+ decreased with increasing leaching frequency(X), fitting the equation of exponential function could be expressed as Y=aX^b egardless of soil textures and potassium fertilizer application rates. The value of b is in between 0.41 and 0.63.
휴 폐광지역 오염토양의 phytoremediation 을 위한 식물자원 검색
김정규(Jeong Gyu Kim),임수길(Soo Kil Lim),이상환(Sang Hwan Lee),이창호(Chang Ho Lee),정창윤(Chang Yoon Jeong) 한국환경농학회 1999 한국환경농학회지 Vol.18 No.1
This study was carried out to assess heavy metal pollution at 16 abandoned mining areas and to get basic data for phytoremediation. In most of surveyed area, there was no vegetation cover and soil reaction shows in low to moderate pH. Low CEC, low organic matter content were the general properties of these soils. Heavy metals content of these soils were exceed background level of unpolluted soil in Korea, especially Cu content was 2,634㎎/㎏ at Jeil site, 3,415㎎/㎏ Zn, 8.03㎎/㎏ Cd at Yonhwa 2 site. This is far above tolerance limit In plant survey, very often observed plants were Pinus densiflora, and Rohinia psuedo-acacia in woody plant, Artemisia princeps, and Dianthus sinensis in herbs. Artemisia prrinceps had higher concentration of Zn, Cd and Dianthus sinensis had higher concentration than other plants. From the results, heavy metal concentration in plants and plant`s ecotype properties, could be said that Artemisia princeps and Miscanthus sinensis have a potential of soil remediation plant. More studies are demanded to find the heavy metal tolerance species and to understand physiology property of tolerance plants, soil condition, climate etc., for successful soil remediation by plants.
점토광물 혼합 사료 급여로 발생된 우분 시용에 따른 옥수수 GK729 의 생장
윤영만(Young Man Yoon),김정규(Jeong Gyu Kim),이상환(Sang Hwan Lee),이창호(Chang Ho Lee),손용석(Yong Suk Son),임수길(Soo Kil Lim) 한국환경농학회 2000 한국환경농학회지 Vol.19 No.1
This study was conducted to examine the effects of cow manure originated from the clay mineral (porphyrite, zeolite and bentonite) feeding on the growth of Zea mays GK729. CEC of the manure after bentonite, zeolite, and porphyrite feeding were 147.5, 137.0, and 114.0 cmol/Kg, respectively. These values were higher than that of non-mineral treated manure, 107.5 cmol/Kg. After 3 month growing, there was significant difference among treatment in the biomass prodcution and the content of minerals in plant tissue of Z mays, but the physico-chemical properties of soils were not showed significant difference. For these results suggested that the clay mineral enhanced the grwoth of Z. mays according to the unknown mechanism, the further studies on the physiological changes will be needed.