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사양토(砂壤土)에 규산성분비료(珪酸成分肥料) 처리시(處理時) 규산용출량(珪酸溶出量) 변화(變化)
이기상,안윤수,이경수,하호성,Lee, Ki-Sang,Ahn, Yoon-Soo,Rhee, Gyeong-Soo,Ha, Ho-Sung 한국토양비료학회 1986 한국토양비료학회지 Vol.19 No.4
유효규산함량이 61 ppm 사양토(砂壤土)에서 규회석(硅灰石) 및 규산질비료시용(珪酸質肥料施用)에 의한 규산용출(珪酸溶出)의 변화(變化)에 관(關)해서 실내(室內) 시험(試驗)을 수행(遂行)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 규회석(硅灰石) 및 규산질비료(珪酸質肥料)를 토양(土壤)에 처리(處理)하고 증류수(蒸溜水) 및 1N-NaOAc(pH 4.0)로 연속침출(連續浸出)했을 때 각(各) 침출용액중(浸出溶液中)의 규산용출농도(珪酸溶出濃度)는 규회석(硅灰石)보다 규산질비료(珪酸質肥料) 처리(處理)에서 높았다. 2. 규회석(硅灰石) 및 규산질비료(珪酸質肥料)를 토양(土壤)에 처리(處理)하고 증류수(蒸溜水)로 연속침출(連續浸出)했을 때 pH는 규산질비료(珪酸質肥料)보다 규회석처리(硅灰石處理)에서 높았다. 3. 규회석(硅灰石) 및 규산질비료(珪酸質肥料)를 토양(土壤)에 처리(處理)하고 항온(恒溫)했을 때 규회석처리(硅灰石處理)는 시용량(施用量)이 많아짐에 따라 수용액중(水溶液中)의 $SiO_2$ 및 K 농도(濃度)는 낮아졌고 규산질비료(珪酸質肥料)에서는 높아졌으며 pH, Ca 및 Mg 농도(濃度)은 두비종(肥種) 모두 높아졌다. 4. 토양(土壤)에 pH를 달리하여 규산용액(珪酸溶液)을 흡착(吸着)시킨 결과(結果) pH 9.4 정도(程度)에서 최대(最大)로 흡착(吸着)되었다. A laboratory experiment was conducted to investigate silica solubility in soil with specific reference to the characteristics of iron refinery slag and wollastonite. The results are as follows; 1. The slilia concentrations successively extracted by distilled water and N-NaOAc (pH 4.0) in soil treated with the two silicate fertilizers, is higher in iron refinery slag than in wollastonite, while the pH values of soil-fertilizer suspensions successively extracted by distilled water were the opposite. 2. Silica concentrations due to increasing of fertilizer application were decreased in iron refinery slag-soil suspensions but the concentrations were increased in wollastonite-soil suspensions. 3. The amounts of silica adsorbed in different pH of soil suspension were maximized under the condition maintained pH of near to 9.4.
Rearing of Orius strigicollis(Heteroptera: Anthocoridae) on Artificial Diet
이기상,이장훈 한국곤충학회 2004 Entomological Research Vol.34 No.4
Orius strigicollis(Poppius) was reared on the modification of rearing media forTetrastichussp. at 28C, 18L:6D, and 50-60% RH, in which meat diets were used for partial rep-lacements of insect source of the artificial diets. Life history traits of the predacious bug fed on thediet were measured. Nymphal development period and mortality rate of O. strigicolliswere about14 days and 31.5%(survival rate: 68.5%), respectively. The female bug produced average of 82.5eggs during its oviposition period of 18 days when artificial oviposition substrate was provided.The fecundity was shown to be superior compared with previous researches on the species fednatural preys as a food.
Rearing of Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae) on Artificial Diet
이기상,이장훈 한국곤충학회 2005 Entomological Research Vol.35 No.3
An artificial rearing method was designed for the generalist predator Chrysopa pallens (Rambur). The rearing media were formulated based on Orius strigicollis diets for feeding larvae, and two diets for adults were prepared with insect source and non-insect as their main components. Development of the predators was successfully obtained with the diets for both larval and adult stages. The impact of these diets was recorded for growth during the larval stage and oviposition rates by the females. Total development period and mortality rate of C. pallens were about 26.9 days and 11%, respectively. The females showed better reproduction with average of 2019 eggs over their life span of 89 days when the artificial diet with non-insect source was provided. On overall basis the life expectancy and fecundity was better when compared with previous findings.