한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)
- 제25권4호
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- Pages.325-333
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- 1992
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
난지(暖地) 2모작(毛作) 세입질(細粒質) 논에서 유기물(有機物)의 연용(連用) 효과
Effect of Long-term Organic Matter Application on the Fine Textured Paddy Soils of Double Cropping System in Temperate Area
- Yoo, Chul-Hyun (Honam crop Experiment Station, RDA) ;
- So, Jae-Don (Honam crop Experiment Station, RDA) ;
- Ida, Akira (Kyushu National Agri. Experiment Station) ;
- Tanaka, Fukuyo (Kyushu National Agri. Experiment Station) ;
- Nishida, Mizuhiko (Kyushu National Agri. Experiment Station)
- 발행 : 1992.12.30
초록
난지(暖地) 세립질(細粒質) 2모작(毛作) 논에서 유기물(有機物)(볏짚, 퇴비(堆肥), 밀짚) 장기연용시(長期連用時)(14.28년(年)) 토양이화학성의 실태와 지력질소(地力窒素) 발현양상 그리고 작물(作物)(수도(水稻), 옥수수)의 질소 흡수(吸收)와의 관계에 대해서 조사분석(調査分析)한 결과(結果)는 다음과 같다. 1. 유기물연용(有機物連用)에 의(依)해 작토시(作土尸)이 깊어지고 용적밀도(容積密度)의 감소(減少), 공극률(孔隙率)의 증가, 고상률(固相率)의 저하(低下), 기상률(氣相率)의 증가가 인정(認定)되었음. 2. 유기물연용(有機物連用)에 의(依)해 전탄소(全炭素)의 년간(年間) 평균증가량은 1~14년간(年間) 볏짚연용시(連用時) 0.0371%, 퇴비(堆肥)는 0.0407%였으나 15~28년(年) 볏짚연용(連用)은 0.0007%, 퇴비(堆肥)는 0.014%였다. 그리고 전질소함량(全窒素含量)은 1~14년간(年間) 볏짚연용시(連用時) 0.0025%, 퇴비(堆肥)는 0.0038%였고, 15~28년간(年間) 볏짚연용(連用)은 0.0014%, 퇴비(堆肥)는 0.0024%가 증가하였음. 3. 유기물연용(有機物連用)에 의(依)해 암모니아 아미드태질소(態窒素)는 밀짚28년연용(年連用), 아미노당태질소(糖態窒素)는 퇴비(堆肥)28년연용(年連用) 그리고 아미노산태질소(酸態窒素)는 볏짚14, 28년연용(年連用), 미동정질소(未同定窒素)는 관행(慣行)에서 높았음. 4. 담수배양(湛水培養) 온도별(溫度別) 가급태질소(可給態窒素) 발현량은
An investigation was carried out to find out the effects of long-term application (14 and 28 years) of rice straw, compost and wheat straw on changes in soil chemical and physical properities, aspests of releasing potential nitrogen and nitrogen uptake by rice and maize from fine textured paddy soils with double cropping system in warm temperate area. The result obtained were summarized as follows : 1. The long-term application of organic matters improved plow layer and soil physical properties : bulk density and solid phase were decreased, while porosity and gaseous phase were decreased. 2. Average increment of total carbon per year was 0.0371% and 0.0407% for rice straw and compost, respectively, from 1 through 14 years ; it was 0.0007% and 0.0014% for the rice straw and compost, respectively, from 15 years through 28 years. The average increment of total notrogen per year was 0.0025% and 0.038% for the rice straw and compost, respectively, from 1 through 14 years ; 0.0014% and 0.0024% for the same treatments from 15 through 28 years. 3.
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