영남지역 시설재배지 토양의 미량원소 함량 분포

Distribution of Micronutrients in Plastic Film House Soils of Yeongnam Provincen

  • 정종배 (대구대학교 생명환경학부) ;
  • 김복진 (영남대학교 생물자원학부) ;
  • 유관식 (대구대학교 생명환경학부) ;
  • 이승호 (영남대학교 생물자원학부) ;
  • 신현진 (영남대학교 생물자원학부) ;
  • 황태경 (영남대학교 생물자원학부) ;
  • 최희열 (대구대학교 생명환경학부) ;
  • 이용우 (대구대학교 생명환경학부) ;
  • 이윤정 (대구대학교 생명환경학부) ;
  • 김종집 (대구대학교 생명환경학부)
  • Chung, Jong-Bae (Division of Life and Environmental Science, Daegu University) ;
  • Kim, Bok-Jin (Division of Biological Resources, Yeungnam University) ;
  • Ryu, Kwan-Sig (Division of Life and Environmental Science, Daegu University) ;
  • Lee, Seung-Ho (Division of Biological Resources, Yeungnam University) ;
  • Shin, Hyun-Jin (Division of Biological Resources, Yeungnam University) ;
  • Hwang, Tae-Kyung (Division of Biological Resources, Yeungnam University) ;
  • Choi, Hee-Youl (Division of Life and Environmental Science, Daegu University) ;
  • Lee, Yong-Woo (Division of Life and Environmental Science, Daegu University) ;
  • Lee, Yoon-Jeong (Division of Life and Environmental Science, Daegu University) ;
  • Kim, Jong-Jib (Division of Life and Environmental Science, Daegu University)
  • 투고 : 2006.05.08
  • 심사 : 2006.07.14
  • 발행 : 2006.08.28

초록

집약적으로 재배하는 시설작물의 품질과 생산성을 향상시키기 위해서는 적절한 미량원소의 관리가 필요하며, 따라서 시설재배지 토양중의 미량원소의 유효도에 대한 평가가 우선적으로 이루어져야한다. 본 연구에서는 영남지역 주요 시설재배지 토양중의 미량원소 함량을 조사하였다. 딸기 재배지 96개소, 고추재배지 66개소, 토마토 재배지 74개소, 참외 재배지 97개소, 오이 재배지 63개소 등 총 396개소의 비닐하우스 토양 시료를 채취하였고, B, Cu, Zn, Fe 및 Mn에 대하여 총 함량과 가용성 함량을 조사하였다. 가용성 함량의 경우 B는 열수로 추출하였으며 Cu, Zn, Fe, Mn은 0.1 N HCl로 추출하였다. 비닐하우스 토양중 B, Cu, Zn, Fe, Mn의 총 함량 평균값은 각각 25, 32, 74, 21,316, $420mg\;kg^{-1}$으로 조사되었다. 이들 값은 비닐하우스 주변 노지 토양중의 총 함량과 크게 다르지 않았다. 조사지역별 그리고 재배작물별로 비교하변 비닐하우스 토양중의 각 미량원소들의 총 함량은 매우 다양하게 나타났다. 가용성 B, Cu, Zn의 함량은 전체 조사 토양에 대한 평균값으로 각각 2.1, 7.5, $35mg\;kg^{-1}$으로 나타났으며, 주변 노지 경작토양에 비하여 대부분 그 함량이 높았다. 가용성 Fe와 Mn의 경우에는 전체 평균값이 각각 156 및 $146mg\;kg^{-1}$이었으며, 가용성 Fe의 함량은 주변 노지 경작토양에 비하여 그 함량이 낮았다. 조사된 시설재배 토양중의 가용성 Zn, Fe, Mn의 함량은 모든 지역에서 대부분 일반작물 재배에 적정한 수준 또는 그 이상의 과잉 수준인 것으로 나타났다. Cu의 경우 딸기, 토마토 및 오이 재배지에서는 가용성 함량이 대부분의 조사 토양에서 적정수준 이상인 것으로 나타났으며, 고추와 오이 재배지에서는 조사토양의 약 30%에서 적정함량에 미달하는 것으로 나타났다. B의 경우 딸기, 고추, 참외 재배지에서 가용성 함량이 적정수준에 미달하는 토양이 많았으며, 전체적으로 가용성 B의 함량이 과잉 수준인 토양은 다른 원소의 경우에 비하여 상대적으로 적은 것으로 조사되었다.

For better management of micronutrients in crop cultivation, the availability of micronutrients in the soils must be updated and evaluated as a first step. This study was conducted to investigate the distribution of micronutrients in soils of plastic film houses. Total 396 soil samples were collected from the plastic film houses of various crops in Yeongnam province (strawberry, 96; red pepper, 66; tomato, 74; oriental melon, 97; cucumber, 63). Total and available contents of B, Cu, Zn, Fe, and Mn in the soils were determined. Available B was extracted with hot water and available Cu, Zn, Fe, and Mn were extracted with 0.1 N HCl. Mean values of total contents of B, Cu, Zn, Fe, and Mn in the plastic film house soils were 25, 32, 74, 21,316, and $420mg\;kg^{-1}$, respectively. Total contents of micronutrients in the plastic film house soils were similar to those found in the open fields nearby, while they were different among the locations investigated. Mean contents extractable B, Cu, and Zn in the plastic film house soils were 2.1, 7.5, and $35mg\;kg^{-1}$, respectively. The contents of extractable B, Cu, and Zn in the plastic film house soils were higher than those found in the open fields nearby with exceptions of B in soils of strawberry and Cu in soils of red pepper and oriental melon. However, mean contents of extractable Fe and Mn in the plastic film house soils were 156 and $146mg\;kg^{-1}$, respectively, and the mean content of extractable Fe was much lower than that found in open fields nearby. The contents of extractable Zn, Fe, and Mn were higher than the sufficient levels for the crop requirements in most of the plastic film house soils investigated. Contents of extractable Cu in most soils of strawberry, tomato and cucumber cultivations were higher than the sufficient level. However, extractable Cu contents were below the sufficient level in about 30% of investigated soils of red pepper and oriental melon cultivation. Soils containing higher contents of extractable B than the sufficient level were relatively fewer in comparison to the other micronutrients.

키워드

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