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金廣植,金容雄,羅光出 全南大學校 農漁村開發硏究所 1992 農業科學技術硏究 Vol.27 No.-
고추 施設栽培 連作土壤의 生化學的 特性을 究明하기 위하여 化學性, 微生物相, 酸素活性 및 腐植의 形態를 調査한 結果를 要約하면 다음과 같다. 1. 土壤化學性은 pH가 5.1-5.9範圍이고 EC는 0.66-0.82mS/㎝ 有機物은 3.15-3.52%, NH₄-N은 2.92-10.30mg/100g, N0₃-N은 19.50-47.55mg/100g, CEC는14.7-15.25me/100g, 有效 燐酸의 範圍는 285.5-304.0ppm으로 連作年數에 따른 土壤化學 成分의 變化 樣相은 一定한 傾向을 찾을 수 없었다. 2. 微生物相은 細菌과 絲狀菌은 連作年數에 따라 증가하였고, 放射狀菌은 減少 후 다시 증가하였으며, Fusarium과 Pythium 屬菌은 減少하였다. Phytophtora 屬菌은 증가하였으며 B/F는 감소하다 약간 증가하였다. 3. 酸素活性은 連作年數에 따라 phosphatase, β-glucosidase, 그리고 protease는 증가하였으나 polygalacturonase는 減少하였다. 4. 腐植의 形態를 보면 腐植酸과 fulvic산의 範圍는 各各 247.1-303.1과 85.1-364.5mg/100g으로 腐植酸은 連作年數에 따라 특별한 傾向은 없었으나 Fulvic酸은 連作年數에 따라 增加는 傾向이었다. 沈澱比率(PQ)은 38.5-78.2로써 多連作일수록 減少하는 傾向이었다. RF는 8.9-19.5, △ logK는 0.7291-0.8223이었으며 腐植酸의 形態는 腐植化度가 낮은 RP形이었다. Chemical properties, microorganisms, enzyme activities and types of humus were investigated to study the characteristics of continuous cropping soils grown pepper plant under plastic house. The results are as follows : 1. Changes of soil chemical properties had not particular characteristics on pH, EC, CEC, organic matter, NH₄-N, NO₃-N, available phosphorous, and exchangable cation, but generally increased for the continuous cropping years. 2. Bacteria, fungi and actinomycetes increased with continuous cropping years. Pythium decreased and then increased with increasing cropping years, but phytophthora increased. 3. Activities of phosphatase, β-glucosidase and protease increased, but the activity of galacturonase decreased with continuous cropping years. 4. The humic acid was not particular characteristic, but fulvic acid increased with continuous cropping years, PQ was between 38.5 and 78.2% and the value decreased with continuous cropping years. RF was between 8.9 and 19.5 △ log K was between 0.7291 and 0.8223. The humic acid was classified as RP type which is low degree of humification.
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광합성세균(光合成細菌) 배양액(培養液)의 상토내(床土內) 혼입처리(混入處理)가 토마토 풀러그묘(苗)의 유묘생장(幼苗生長)에 미치는 영향(影響)
羅光出 ( Nah Kwang-chul ),趙自容 ( Cho Ja-yong ),鄭淳柱 ( Chung Soon-ju ) 한국유기농업학회 1997 韓國有機農業學會誌 Vol.5 No.2
This experiment was conducted to clarify the plant growth promoting effects of compost supplemented with cultured solution of photosynthetic bacteria (Rhodopseudomonas capsulatus) before sowing on the early growth of plug seedlings of tomato and to evaluate the optimum concentration of bacterialization. Bacteriaiizing concentrations(v/w) to the compost were 2%, 3.3%, 10%, 20% and 50%, respectively. Plant growth in terms of plant height, stem diameter, leaf area, total fresh and dry weight were promoted by the bacterialization of photosynthetic bacteria. Especially, in the plots supplemented with 10 to 20% the early growth was promoted markedly over 2 times. Compositions of photosynthetic bacteria consisted of crude protein 60.7%, soluble carbohydrates 20.1%, crude fat 7.6%, crude fiber 3.2% and crude ash 4.8%, respectively.
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