Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Seasonal Change in the Soil Chemical Properties from Sweet Persimmon Orchard in Gyeongnam Province

경남지역 단감 재배 토양의 화학성 변화 평가

  • Lee, Young-Han (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Choi, Seong-Tae (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Lee, Seong-Tae (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Hong, Kang-Pyo (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Song, Won-Doo (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Lee, Jin-Ho (Department of Bioenvironmental Chemistry, College of Agricultural and Life Sciences, Chonbuk National University) ;
  • Cho, Ju-Sik (Division of Applied Life and Environmental Sciences, Sunchon National University)
  • Received : 2010.08.30
  • Accepted : 2010.09.30
  • Published : 2010.10.30
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Abstract

Field monitoring was performed to evaluate the soil chemical properties of 31 sweet persimmon orchard soil samples every two months from April to October in 2008 at Gyeongnam Province. Soil chemical properties such as pH, organic matter, available phosphate, exchangeable potassium, exchangeable calcium, exchangeable magnesium, exchangeable sodium, ammonium nitrogen, and nitrate nitrogen were analyzed. The soil chemical properties of both top soil, and subsoil showed that soil pH was significantly increased whereas ammonium nitrogen, and nitrate nitrogen were significantly decreased. The insufficient levels of nutrients in top soil, and subsoil were higher in 69.4%, and 84.7% for pH, 63.7%, and 84.7% for organic matter compared to optimum range. Meanwhile, the excessive levels of available phosphate showed 70.2% in top soil, and 46.8% in subsoil compared to optimum range. The experimental results showed that the optimum fertilization based on soil testing was the most important thing in soil nutrients management for sweet persimmon.

경남지역 단감 재배 토양의 양분관리를 위한 기초 자료를 제공하고자 창원 7, 마산 1, 진주 6, 사천 3, 김해 5, 밀양 2, 함안 2, 창녕 1, 하동 3, 산청 1 등 31개 지점을 선정하였고 4월부터 10월까지 2개월 단위로 4회 조사하였다. 표토와 심토의 pH 값은 4월에 비해6월 이후 유의적인 증가를 나타냈으며 적정수준인 6.0-6.5 보다 낮았다. 반면, 암모니아태 질소 함량과 질산태 질소 함량은 4월 보다 6월 이후 유의적인 감소를 나타냈다. 표토와 심토의 pH는 적정수준인 6.0-6.5 보다 부족한 비율이 각각 69.4%와 84.7%로 매우 높게 나타나 경남지역 단감 재배 토양의 pH 교정을 위해 토양개량제 공급이 시급한 것으로 판단되었다. 토양 유기물 함량도 적정수준인 25-35 g $kg^{-1}$ 분포비율은 표토 13.7%, 심토 4.0%로 매우 낮았으며 부족한 비율이 각각 63.7% 및 84.7%로 매우 높아 적절한 유기물 공급이 필수적인 것으로 나타났다. 유효인산 함량은 적정수준인 200-300 mg $kg^{-1}$보다 초과된 비율은 표토 70.2%, 심토 46.8% 였으며 토양 유기물 함량 (r=0.339, $p{\leq}0.001$)과 고도의 유의적인 정의상관을 보여 가축분 퇴비 과다 시용에 대한 주의가 필요한 것으로 나타났다.

Keywords

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