• 제목/요약/키워드: Evaluating rural communities

검색결과 13건 처리시간 0.021초

가축분 퇴비와 어분 액비 시용이 유기농 오이 생육 및 토양환경에 미치는 영향 (Assessment of Soil Properties and Growth of Organically Cultivated Cucumber (Cucumis sativus L.) with Applications of Livestock Manure Compost and Fish Meal Liquid Fertilizer)

  • 안난희;조정래;이상민;남홍식
    • 유기물자원화
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    • 제26권3호
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    • pp.23-31
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    • 2018
  • 유기농 오이의 안정생산을 위한 양분관리 방법으로 가축분 퇴비와 어분액비 시용이 오이 생육과 토양환경에 미치는 영향을 검토하기 위하여 본 연구를 수행하였다. 시험은 가축분 퇴비 100% (LC100), 가축분 퇴비 50% + 어분액비 50% (LC50 + LF50), 가축분 퇴비 50% (LC50), 화학비료 (NPK), 그리고 무비 (NF) 등 5처리로 하여 처리구별 토양 화학성, 토양미생물 군집 변화, 그리고 오이 생육 및 수량을 조사하였다. 그 결과, 토양화학성의 경우에는LC50 + LF50 처리는 LC100 처리와는 EC 함량을 제외하고는 통계적인 유의차가 없었으며 화학비료 처리와는 pH를 제외하고 통계적인 유의차를 나타냈다. 토양 미생물 군집의 경우에는 미생물 밀도는 처리에 따른 통계적 유의차가 없었으며 Microbial biomass C 함량은 NF, NPK 처리에 비해 가축분 퇴비, 액비와 같은 유기물 시용구에서 높게 나타났다. 각 처리에 의한 오이 생육을 비교한 결과, 오이 초장과 생체중은 LC100, LC50 + LF50, 그리고 NPK 처리간에는 통계적인 유의차가 없었으나 NF와 LC50 처리와는 유의적인 차이를 나타냈다. 오이 수량은 NPK 처리가 7,397 kg/10a으로 가장 많았지만 LC50 + LF50, 그리고 LC100 처리와는 통계적인 유의차가 없었다. 이러한 결과로부터 유기농 오이 재배에서 가축분 퇴비와 어분액비 시용으로 양분관리가 가능할 것으로 판단되었다.

국내 일부 초등학교 바닥먼지 내 화학적 및 생물학적 유해인자의 분석 (Chemical and Microbiological Hazard Analysis of Floor-Settled Dust in Elementary School Classrooms in Korea)

  • 김지영;정세영;김수정;김진아;시지연;조연우;조경덕;고광표
    • 한국환경보건학회지
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    • 제37권4호
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    • pp.279-288
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    • 2011
  • Objectives: This study investigated the levels and components of floor-settled dust in two elementary schools located at different sites (one near the Shihwa industrial complex and the other in a rural area) in order to evaluate the amounts of trace metal elements (As, Cd, Co, Cr, Cu, Ni, Pb and Zn) and microorganisms. Methods: Over twenty settled-dust samples were collected from the two elementary schools. Trace metal elements were extracted from the dust using hydrochloric acid and nitric acid, and the amounts were measured by ICP-OES. Microbiological analysis was performed by bacterial culturing using R2A medium and denaturing gradient gel electrophoresis (DGGE). Results: The results showed that the amounts of three metal elements (Cr, Pb, and Zn) were significantly different between the schools (${\alpha}$=0.05, p<0.04). In addition, microbial communities in each school were highly correlated with one another. Among the identified microorganisms, a number of potentially opportunistic microorganisms, including antibiotic-resistant bacteria such as Acinetobacter baumannii, were found. Conclusions: This study will provide preliminary data for assessing levels and types of chemical and microbiological agents in elementary schools and for further evaluating human health risks associated with the agents.

한국농촌주민(韓國農村住民)의 계절별(季節別) 식품섭취조사연구(食品攝取調査硏究) (A Study on Seasonal Variations of Food Consumption of Korean Farmers)

  • 박명윤
    • Journal of Nutrition and Health
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    • 제9권1호
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    • pp.43-50
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    • 1976
  • This is the report of a food consumption survey of 193 members of 30 farm families in three rural villages of Korea. From a total of 188 households of the three villages, namely Wolgok in Kyunggi Do Province, Wachon in Kangwon Do Province, and Sobong in Cholla Namdo Province, 30 households were chosen for the survey. Four consecutive seasonal surveys, beginning in the autumn, November 1974 and finishing with the summer, August 1975, were made and each survey covered three consecutive days. The Precise Weighing Method was used in evaluating the kinds of food and nutrient intakes of the subjects. This method entails the accurate weighing of all foods by the investigator just prior to their consumption by the subjects under investigation. This survey was male to determine the actual food eaten by the members of these farm families at each season of the year, and to note any special differences in the foods consumed. The results obtained are summarized as follows: Food Intake The traditional ordinary diet of Korean farmers consists mainly of rice and other cereals as staple foods, and simple subsidary foods. The nutritional shortcomings of rice as a staple food are evident in the subclinical status of nutritional deficiencies. The mean consumption of cereals and their products was very high and it was more than half of the daily total food intake throughout all the seasons. The consumption of animal food, fruits, and fat by the farmers was very low. Fruit intake during winter and spring was almost nil. One of the special foods in the Korean dietary pattern is Kim-chi, a variety of pickled and fermented vegetables. The mean intake of Kim-chi during autumn and winter was very much higher than the other seasons. Korean farmers have difficulties in balanced year-round supply of food due to seasonality of food production and lack of food preservation. As nutrition problems of Korean farmers are highly influenced by seasonal variations, the expansion of an appropriate food preservation and storage programme should be encouraged. Special consideration should be given to new methods of preservation, the types of foods preserved, and production and consumption of nutritionally valuable foods for the improvement of the nutritional status in rural communities. Nutrient Intake Average adult rates for calorie and protein in the three study areas were 0.80 and 0.87 respectively, with little variations by villages. The adult caloric intake in averaged 2,928 kcal for autumn, 2,662 for winter, 2,673 for spring, and 2,760 for summer. Cereals contributed most of the total calories. In terms of the recommended daily dietary allowances for the Korean given by the Korea FAO Association, the diets in this survey were adequate except in the winter and spring. The protein intake averaged from 76.4 grams in autumn to 83.4 grams in summer and was near the recommended allowance, but a relatively large proportion of the total protein came from cereals and their products. The fat intake was unsatisfactory, ranging from 19.2 grams to 29.3 grams for the four seasons, and the consumption during farming season was higher than other seasons. It is apparent that the diet of the Korean farmers should be supplemented by calcium during autumn and winter. The highest calcium intake, with a mean of 583.5 milligrams, was recorded in summer. The mean intake of iron ranged from a low of 9.2 milligrams in the autumn to a high of 15.0 milligrams in the spring and it was satisfactory for all seasons. Among the vitamin group, the daily average intakes of vitamin A, thiamine, riboflavin, and ascorbic acid were lower than the desired intake throughout all the seasons. The mean vitamin A intake as ${\beta}-carotene$ ranged from a low of 2,807.8 IU to a high of 5,221.0 IU. The thiamine intake ranged from 0.98 milligrams to 1.19 milligrams, while mean riboflavin intake ranged from 0.92 milligrams to 1.13 milligrams. Ascorbic acid intake was 37.3 milligrams, the lowest, and the highest 47.8 milligrams. Niacin intake among Korean farmers was higher than the recommended allowance throughout all the seasons, and the mean intake ranged from 18.3 milligrams to 25.8 milligrams. The main character of the Korean farmers' diet has been found low in quality of protein and high in carbohydrate. Attention should be paid to the low intake of vitamin A, thiamine, riboflavin, and ascorbic acid among Korean farmers.

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