Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 34 Issue 2
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- Pages.92-97
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- 2001
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Effects of Physical Improvement Practices at Plastic Film House Soil
시설재배 토양의 물리성 개선을 위한 처리방법별 효과 비교
- Kim, Lee-Yul (National Institute of Agriculture Science & Technology) ;
- Cho, Hyun-Jun (National Institute of Agriculture Science & Technology) ;
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Hyun, Byung-Keun
(National Institute of Agriculture Science & Technology) ;
- Park, Woo-Pung (National Agricultural Mechanization Research Institute)
- Published : 2001.04.30
Abstract
Soil characteristics and crop productivity was compared between 5 soil physical treatment plots: check, reversion, subsoiling, explosive subsoiling and drainage in salt accumulated Gangseo Fine sandy loam soil from 1999 to 2000. Physical treatments of subsoil improved soil physical properties in the following order, reversion > drainage > explosive subsoiling > subsoiling > check. The effectiveness of physical treatment was sustained to the 2nd year after treatment. Soil moisture content of subsoil was highest in the reversion treatments and decreased in the order of drainage, subsoiling, and check. However there was little difference between treatments. The physical treatments increased fluctuation of soil moisture content. However the crop yield in the physical treatment plots were increased. It was considered that the increase of crop yield was caused by improvement of soil physical properties rather than soil water holding in the soil. An average increase rate of crop yield by physical treatments was 10 to 20 percent.
염류가 집적된 시설재배지의 강서 미사질 양토에서 1999년부터 2년간 무처리, 심토반전, 심토파쇄, 폭기식 심토파쉐 및 암거배수 등 5개 처리를 하여 토양의 물리적 성질과 작물 생산성을 비교시험하였다. 1. 심토의 물리성 개선효과는 심토반전 > 암거배수 > 심토파쇄 > 무처리 순으로 높았고 2년차까지 잔효가 인정되었으며 토양물리성 개선처리는 통기성을 높이고 근권을 확대시켰다. 2. 심토의 토양수분함량은 심토반전 > 암거배수 > 심토파쇄 > 무처리 순으로 높았으나 큰 차이는 없었다. 또한 토양물리성 개선처리는 무처리구에 비하여 토층내 시기별 토양수분함량 변동폭을 크게 하였다. 3. 토양물리성 개선처리에 의한 토층내 염농도 저하효과는 적었으며 토양물리성 개선구의 수량증대는 염농도 저하나 토층내 양수분 분포개선 보다는 물리성 개선효과가 더 높은 것으로 판단되었다. 4. 토양물리성 개선처리에 의한 평균수량 증대효과는 10~20%정도 이었다.