저회 펠렛 시용이 배추 재배에 미치는 영향
Effect of Pelleted Bottom Ash Application on Kimchi Cabbage Cultivation
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초록
본 연구는 바이오매스 전소 화력발전소에서 배출되는 저회에 유기 물질을 혼합하여 펠렛화한 후 배추 재배 미치는 영향을 평가하기 위해 수행되었다. 배추 재배는 노지(UC, upland cultivation)와 시설재배지(GC, greenhouse cultivation)에서 진행되었으며, 처리조건은 대조구(Cont, control)와저회(BA, bottom ash), 유기질 비료(OF, organic fertilizer), 저회 펠렛(BP, pelleted bottom ash) 처리구로 나누었고, 배추 이식 7일 전에 저회,유기질 비료 및 저회 펠렛을 각각 1 ton 10a-1 수준으로 시용하였다. 배추의 생체중은 재배지역에 상관없이 OF와 BP 처리구에서 가장 높았으며,Cont 처리구에 비해 각각 15.7-41.6 및 9.7-51.5% 범위로 생체중이 증가하였다. BP 처리구에서 배추 수확 후 토양의 화학적 특성은 전반적으로OM, TN, Avail. P2O5 등의 함량이 개선되는 효과를 보여주었으며, 이는 OF 처리구와 유사하였다. 노지와 시설재배지에서 배출된 N2O 배출량은BP 처리가 OF 처리에 비해 29.7 및 11.0%로 각각 감소되는 결과를 보였다. 따라서, 저회 펠렛의 시용은 관행처리구와 비교해 볼 때, 배추 생육,토양 특성 및 N2O 배출적인 측면에서 효과가 있는 것으로 판단된다.
Abstract
This study was conducted to evaluate the effect of pelleted bottom ash including organic materials from biomass-based thermal powerplant on Kimchi cabbage cultivation. A field experiment was carried out on upland cultivation (UC) and greenhouse cultivation (GC). Each of the bottom ash (BA, applied at 1 ton 10a-1), organic fertilizer (OF, applied at 1 ton 10a-1), pelleted bottom ash (BP, appliedat 1 ton 10a-1) treatments areas were separated by a control (Cont) treatment area. The BA, OF, and BP were applied by hand andplowed to a soil depth of 15 cm 7 days before Kimchi cabbage transplanting. Regardless of the cultivations, fresh weight of Kimchicabbage was best under OF and BP treatments, and increased by 15.7-41.6 and 9.7-51.5%, respectively, compared to the Cont treatment. The soil chemical characteristics after Kimchi cabbage in the BP treatment had improved OM, TN, and Avail. P2O5, and which similarto the effect of OF the treatment. Compared to the OF treatments, total N2O flux was lower with BP treatment (flux decreased by29.7% in UC and 11.0% in GC). These results indicate that Kimchi cabbage yield, soil quality, and N2O emission when cultivatedin soil conditions such as those in Kimchi cabbage field in South Korea, can be improved by application of BP.
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