Korean Journal of Environmental Agriculture (한국환경농학회지)
- Volume 18 Issue 4
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- Pages.327-331
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- 1999
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- 1225-3537(pISSN)
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- 2233-4173(eISSN)
Effects of Slow-Released Nitrogen Fertilizer Using Waste Paper Slurry on the Growth and Yield of Chinese Cabbage and Chemical Properties of Soil
폐지섬유를 이용한 완효성 요소비료가 배추의 생육 및 수량과 토양의 화학성에 미치는 영향
- Back, Jun-Ho (School of Biological Resourses, Yeungnam University.) ;
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Kim, Bok-Jin
(School of Biological Resourses, Yeungnam University.) ;
- Park, Woo-Churl (Dept of Agricultural Ohemistry Kyungbook National University.) ;
- Kang, Sang-Jae (Dept of Horticulture Sanju National University.)
- Published : 1999.12.30
Abstract
The purpose of this study was to find out the effects of slow-released nitrogen fertilizer (SRF) on the growth and yield of Chinese cabbage. The SRF used in this study was prepared by embedding urea into a waste paper slum. The underwater dissolution rate of SRF was very rapid during the first 12 hours and 60.4% of the embedded nitrogen was released after 72 hours. The SRF and urea was applied as nitrogen source and growth. yield, yield components, nitrogen uptake of Chinese cabbage were investigated a pot experiment. Maximum leaf length of Chinese cabbage was not different between SRF and urea treatments. Length and wish of head, number of leaf per head and fresh weight of Chinese cabbage were higher in SRF treatment than those in urea treatment, but the differences were not statistically significant. Comparing to the urea treatment, nitrogen content and nitrogen uptake efficiency of Chinese cabbage were significantly higher in SRF treatment. After the experiment, total soil nitrogen contents were not different between the SRF and urea treatments.
Pot당 풍건토양 15㎏에 질소비료를 제외한 인산과 가리비료만 시용한 무질소구(None-N), 질소비료로 요소를 시용한 요소구(urea, control)와 질소비료로 폐지섬유를 이용한 시제품을 사용한 시제품구(SRF)에 배추(평강하보배추)를 공시하여 작물의 생육, 수량 및 수량구성요소, 작물의 양분이용율 및 토양의 화학적 특정변화 등을 조사하여 실용화 가능성을 검토한 결과는 다음과 같다. 시제품의 질소수중용출량은 12시간까지는 60.4%로 급격하게 용출량이 많았으나, 그 후 서서히 용출되어 72시간에 75%까지 용출되었다. 최엽장은 시제품구와 요소구간에 전생육기에 비슷한 경향을 보였다. 정식 후 40일의 엽록소 함량과 광합성능력은 시제품구에서 요소구보다 다소 높았다. 구고, 구폭, 엽수 및 개체당 생체중은 시제품구와 요소구간에 통계적인 유의성은 없었다. 수확기에 식물체중 전질소함량과 질소이용율은 시제품구가 요소구보다 높았으며, 질소흡수량은 시제품구가 요소구보다 11% 높았다. 시험 후 토양중 전질소함량은 시제품구와 요소구간에 비슷한 경향이었다.
Keywords
- Chinese cabbage;
- SRF(slow-released fertilizer);
- Chlorophyll content;
- Photosynthetic activity;
- Nitrogen content;
- Nitrogen uptake;
- Nitrogen efficiency