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Effect of Applications of Swine Waste and Chemical Fertilizer on Productivity of Silage Corn and Nitrogen and Phosphorus Leaching in Lysimeter

Lysimeter에서 돈분 및 화학비료의 시용수준이 옥수수의 생산성 및 N과 P의 용탈에 미치는 영향

  • Published : 2002.06.01

Abstract

This study was conducted to investigate the effects of application levels of swine waste and chemical fertilizer on productivity of corn and nitrogen and phosphorus leaching in Lysimeter containing sandy loam soil. Main Plots were consisted of two types of swine waste, such as swine slurry(SS) and compost of swine manure fermented with sawdust(CSMFS), and chemical fertilizer(CF) and the subplots were consisted of application levels of N-fertilezer, such as 100kgN/ha, 200kgN/ha and 400kgN/ha. Lysimeters were constructed with 1m depth, 30cm diameter. The results obtained were summarized as follows ; 1. Dry matter(DM) yield of com enhanced as increased application levels of SS, CSMFS and CF. DM yield reveals that there is an increase in order CS > SS > CSMFS. 2. Nitrogen contents of the whole corn enhanced as increased application levels of SS, CSMFS and CF. Nitrogen content reveals that there is an increase in order CS > SS > CSMFS. 3. $NO_3^{-}$ and P contents in the leaching water increased as increased application levels of SS, CSMFS and CF. $NO_3^{-}$ content was highly elevated in the concentrated rainy season in the experimental early stage. However, P content was affected with the rainfall. The maximum $NO_3^{-}$ and P contents in the leaching water were 14.8ppm and 0.26ppm, respectively.ively.

본 연구는 lysimeter에서 돈분액비, 톱밥발효 돈분 및 화학비료를 각각 100, 200, 400kg/ha 수준으로 시용하였을 때 옥수수의 생산성, 질소의 이용효율 및 N $O_3^{-}$와 P 용탈에 의한 환경 오염에 미치는 영향을 정확히 규명, 가축분뇨의 자원화는 물론 가축분뇨에 의한 환경오염 방지대책 수립을 위한 기초자료를 제공하고자 수행되었으며 그 연구결과는 다음과 같다. 1. 옥수수의 건물수량은 돈분액비, 톱밥발효 돈분 및 화학비료 모두 시용수준과 비례하여 증가하는 경향을 보였으며, 화학비료> 돈분액비 > 톱밥발쵸돈분의 순으로 높은 경향을 나타내었다. 2. 돈분액비, 톱밥발효돈분 및 화학비료 시용구간 silage용 옥수수의 질소 함량은 화학비료 > 돈분액비 > 톱밥발효돈분 순으로 높았고, 시용수준과 비례하여 증가되는 경향을 보였다. 3. $NO_3^{-}$와 P의 용탈량은 돈분액비, 톱밥발효 돈분 및 화학비료 모두 시용수준과 비례하여 증가하였으며 계절적으로는 $NO_3^{-}$는 단지 시험초기 집중호우기에 높은 용탈량을 나타낸 반면 P는 강우시마다 지속적으로 높은 경향을 보여주었고, $NO_3^{-}$와 P의 최고 용탈량은 각각 14.8ppm과 0.26ppm이었다.

Keywords

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