Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Effects of Soil Addition and Subsoil Plowing on the Change of Soil Chemical Properties and the Reduction of Root-Knot Nematode in Continuous Cropping Field of Oriental Melon (Cucumis melo L.)

시설참외 연작재배지 토양의 객토 및 심토반전이 토양 화학성 변화와 토양선층 억제효과에 미치는 영향

  • Jun, Han-Sik (Kyongbuk Agricultural Technology Administration) ;
  • Park, Woo-Chul (Dept. of Agricultural Chemistry, Kyungpook National University) ;
  • Jung, Jae-Sik (Kyongbuk Agricultural Technology Administration)
  • Published : 2002.03.31
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Abstract

To elucidate the effect of soil addition and subsoil plowing on the change of sell chemical properties and the reduction of root-knot nematode, this experiment carried out in continuous cropping field of protected oriental melon (Cucumis melo L.). Soil addition reduced electric conductivity (E. C.) from 4.3 to 1.8 dS/m (58%), available $P_2O_5$ from 406 to 182 mg/kg (55%) and organic matter content from 16 to 11 g/kg (31%). Population densities of root-knot nematode in soil reduced as much as 89%, 84%, and 69% at first year, third years, and of five years later, respectively The effects of subsoil plowing were similar to that of soil addition. E. C. and phosphate were reduced from 4.30 to 1.98 dS/m (54%) and phosphate from 406 to 329 mg/kg (19%), respectively. Population densities of root-knot nematode reduced as much as 71%, 67%, and 42% after 1, 3, and 5 years, respectively Subsoil plowing reduced nematode densities only for three years.

우리나라의 시설참외 주산지인 성주지역의 시설참외 연작 대책으로 객토와 심경에 의한 토양 화학성분의 변화와 뿌리혹선충 억제효과를 조사한 결과는 다음과 같다. 시설참외 연작 대책으로 많은 양의 객토를 함으로 EC는 4.30 dS/m에서 1.80 dS/m 58%, 유효인산은 406 mg/kg에서 182 mg/kg으로 55% 감축되고 유기물 함량이 16 g/kg에서 11 g/kg으로 31% 줄어 퇴비 등 각종 거름 사용량을 증가해야 하며 뿌리혹선충 밀도 억제효과는 1년 차 89%, 3년 차 84%, 5년 차 69%로 되어 근본 대책이 되지 못하면서 영농비 가중 및 환경 파괴의 문제가 수반되었다. 심토반전 효과도 객토와 비슷하여 EC 4.30 dS/m에서 1.98 dS/m 54% 줄고 유효인산 406 mg/kg에서 329 mg/kg으로 19% 줄었으며 뿌리혹선충 밀도 억제 효과는 처리 후 1년 차 71%, 3년 차 67%, 5년 차 42%가 되므로 처리 3년 이후에는 다른 대책이 필요하였다.

Keywords

References

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