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연구보문 : 간척지에서 돈분액비 분시가 춘파 청보리 수량과 토양화학성에 미치는 영향
이상복 ( Sang Bok Lee ),백남현 ( Nam Hyun Baik ),유진희 ( Jin Hi Yoo ),김선 ( Sun Kim ),조광민 ( Kwang Min Cho ),오영진 ( Young Jin Oh ),박태일 ( Tai Il Park ),김태수 ( Tai Soo Kim ),김기종 ( Kee Jong Kim ),김정곤 ( Chung Kon Kim 한국국제농업개발학회 2010 韓國國際農業開發學會誌 Vol.22 No.4
간척지에서 가축분뇨 액비 이용 청보리 재배 방법을 구명하기 위해서 계화간척지 문포통에서 화학비료 관행재배를 대비로 액비를 기비와 추비로 분시로 하여 전체 6개 처리를 두고 청보리를 춘파한 후 토양 양분변화, 식물체 양분 흡수량 및 수량 등을 조사하였다. 1. 토양중 NO3-N함량은 액비시용 후 20일째에 가장 높은 후 생육 후기로 갈수록 감소하였다. 2. 액비처리 후 토양중 NO3-N와 Av.P2O5함량은 표토에 주로 많이 함유되었고 심토에서는 처리 간에 큰 차이가 없었다. 3. 식물체 양분흡수량은 액비 전량 투여구보다 액비 분시에서 높게 나타났다. 투여된 질소이용율은 화학비료>N50+50%=N60+40%>N100%순으로 나타났다. 4. 청보리 건물수량은 화학비료 관행 714kg10a-1 대비 액비 N100%시용구에서 76%, 액비N50+50%시용구에서 89%로, 돈 분뇨 액비를 기비와 추비로 분할시용이 기비 전량시용보다 높게 나타났다. 따라서 간척농경지에서 가축분뇨 액비시용에 의한 청보리 증수를 위해서는 일시에 전량 시용하는 것보다는 분할 시용해야 높은 수량을 얻을 수 있을 것으로 판단된다. In order to develop silage barley cultivation method using liquid manure of livestock manure, experiments were conducted at Munpo series(coarse loamy, mixed, nonacid, mesic family of Typic Fluvaquents) soil in Gyehwa-reclaimed land, six plots, a liquid pig manure(LPM) applied rate as N%; non-application, chemical fertilizer(CF), 100, 60+40, 50+50 and 50+CF50 as basal and additional fertilizer. And barley was seeded in spring. NO3-N content in soil was highest in chemical fertilizer and LPM 100% at 20th day after liquid manure application and decreased as along with the growth of plant. Amount of NO3-N and Av.P2O5 in soil was high in top soil but in subsoil difference was little in all treatment. Amount of nutrient uptake in plant was higher in chemical fertilizer and split application of LPM than LPM 100% application. N utilization rate was in the order of chemical fertilizer>LPM50+CF50%=LPM50+50%=LPM60+40%>LPM100%. Silage barley yield was higher in split application of liquid manure than whole application of liquid manure at a time.
돈분 퇴ㆍ액비 시용 방법이 벼 양분 흡수, 수량 및 토양물리화학성에 미치는 영향
이상복(Sang-Bok Lee),조광민(Kwang-Min Cho),백남현(Nam-Hyun Baik),양창휴(Nam-Hyun Baik,),정재혁(Je-Hyuck Jung),김기종(Je-Hyuck Jung),이경보(Gyung-Bo Lee) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.5
벼 재배시 돈분뇨 퇴?액비 시용 방법을 구명하기 위하여 전북 고창 소재 미사질 양토에서 화학비료 100% 대비 돈분뇨 퇴?액비를 기비와 추비로 분시하여 5개처리구에 벼 품종 동진1호를 사용하여 토양 이화학성 변화, 양분이용률 및 수량 등을 조사하였다. 논 토양중 NH₄+-N함량은 벼 생육초기에는 화학비료 100%구가 퇴?액비 분시구보다 높았으나 생육후기로 갈수록 처리간에 큰 차이가 없었다. 침출수중 NO₃<SUP>-</SUP>-N함량은 화학비료 100%구보다 퇴비와 액비 또는 화학비료 분시로 낮아졌다. 시험 후 논토양 중 OM과 Avail. P₂O5 및 치환성 양이온 함량은 퇴?액비의 영향으로 퇴비 50%+액비 50%구와 퇴비 30%+액비 70%구에서 높았고 공극율도 높은 경향이었다. 벼 양분 흡수량은 화학비료 100%구와 퇴?액비 분시구간에 큰 차이가 없었으나, 질소 이용률은 화학비료 100%구 대비 퇴비 50%+액비 50%구와 퇴비 30%+액비 70%구에서 평균 66%수준에 머물렀다. 쌀 수량은 화학비료 100%시용구 557 kg 10a<SUP>-1</SUP>대비 퇴비 50%+액비 50%는 90%로 낮은 수준이나 퇴비 30%+화학비료 70%와 퇴비 30%+액비 70%구는 평균 96%로 화학비료 100%와 유의차가 없었다. 따라서 벼 재배시 가축분뇨 퇴비 30% 시용 후에 액비 또는 화학비료 70%를 분시하면 토양 물리화학성 개선은 물론 화학비료를 절감할 수 있으며, 일시에 전량 액비시용보다는 작물이 필요한 시기에 분시를 함으로서 생산성 향상과 토양 환경오염을 줄일 수 있을 것으로 판단된다. In order to develop the application method of compost manure (CM) and liquid manure (LM) for rice cultivation, experiments were conducted at silty loam paddy field in Gochang, Jeonbuk, a LM applied rate as N%; non-application, chemical fertilizer (CF) 100%, CM 50%+LM 50%, CM 30%+CF 70% and CM 30%+LM 70% as basal and additional fertilizer. NH₄+-N content in paddy soil was higher with CF 100% application than the split application of compost and liquid pig manure fertilizer during the early stage of rice growth. However, there was no significant difference in the later part of rice growth. Amount of NO₃ --N in leachate was decreased in CM 30%+LM 70% and CM 30%+CF 70% split applications compared to CF 100%. Amounts of OM and Avail P₂O5, Exch. cations in soil of experiment after were highest with the split application of CM 50%+LM 50% and CM 30%+LM 70%. Amount of nutrient uptake of plants were no significant difference between the split application plots of CM and LM, but nitrogen utilization rate was 66% in average CM 50%+LM 50% and CM 30%+LM 70% to compared CF 100%. The rice yield of CM 50%+LM 50% was lower (90%) comparing that of CF 100% (557 kg 10a<SUP>-1</SUP>). But the yield in CM 30%+CF 70% and CM 30%+LM 70% reached 96% in average, which did not show significant difference with that of CF 100%. Accordingly, LM 70% or CF 70% split application after CM 30% application was helpful in enhancing the physicochemical property of soil as well as reducing CF. It could be evaluated that this application in segmentation was better in productivity improvement and soil pollution reduction than the esinultaneous application of LM 100% in terms of split application in times of requirement for plants.
계화간척지에서 돈분뇨 퇴·액비 시용이 청보리 (Hordeum vulgare L.) 수량 및 토양화학성에 미치는 영향
이상복(Sang-Bok Lee),조광민(Kwang-Min Cho),백남현(Nam-Hyun Baik),이정준(Jung-Jun Lee),오영진(Young-Jin Oh),박태일(Tail-Il Park),김기종(Kee-Jong Kim) 韓國土壤肥料學會 2011 한국토양비료학회지 Vol.44 No.3
In order to develop the application method of pig compost (PC) and liquid manure (LM) for whole crop barley cultivation, experiments were conducted at Munpo series (coarse loamy, mixed, nonacid, mesic family of Typic Fluvaquents) soil in Gyehwa-reclaimed land, six plots, a LM applied rate as N% ; non-application, chemical fertilizer (CF)100, 100, 50+50, 50+CF50 and (PC30+LM40)+LM50 as basal and additional fertilizer. NO3--N content in soil was decreased as along with the growth of plant, highest in LM100% as basal fertilization at early growth stage and highest in (PC30%+LM40%)+LM40% and CF100% at last growth stage. Amount of NO3--N and NH4+-N in soil was high in (PC30%+LM40%)+LM40% and CF100% of top soil but in subsoil significant difference was little in all treatment. Amount of OM, AV. P2O5, T-N, exchangeable Ca and Na in soil was higher (PC30%+LM40%)+LM40% than non-application after harvest. Amount of nutrient uptake in plant was higher in CF100% and split application of LM than LM 100% application. Nitrogen utilization rate was in the order of CF100% >LM50%+LM50%=LM50%+CF50%> (PC30%+LM40%)+LM40% >LM100%. The yield of whole crop barley in (PC30%+LM40%)+LM40% and CF100% was 3.2 times more than in non-application (309 kg 10a-1). Feed values such as crude protein and TDN was increased 1.0% ~ 1.4% in LM as split application than basal 100% treatment. Accordingly, in order to increase yield of a whole crop barley with application PC+LM in reclaimed land treat split application rather than to treat LM 100% into the land.