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남상운 ( Nam Sang Woon ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),황한철 ( Hwang Han Cheol ),홍성구 ( Hong Seong Gu ),허연정 ( Heo Yeon Jeong ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-
This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the environmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigation systems of soilless culture were controlled by the time clock. Evapotranspiration of cucumber in soilless culture was investigated and correlations with environmental conditions were analyzed, and its prediction model was developed. A irrigation control model based on the time clock control and there were considered seasons, weather conditions, and growth stages was developed. Applicability of the model was tested by simulation. Drainage rates of irrigation system controlled by conventional time clock, integrated solar radiation, and the developed model were 61%, 20%, and 32%, respectively in cucumber perlite culture.
남상운 ( Nam Sang Woon ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),황한철 ( Hwang Han Cheol ),홍성구 ( Hong Seong Gu ),허연정 ( Heo Yeon Jeong ) 한국농공학회 1999 韓國農工學會誌 : 전원과 자원 Vol.41 No.2
This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the environmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigation systems of soilless culture were controlled by the time clock. Evapotranspiration of cucumber in soilless culture was investigated and correlations with environmental conditions were analyzed, and its estimating model was developed. In order to develop the irrigation system which can control the amount of nutrient solution applied according to seasons, weather conditions, and growth stages, a irrigation clock control was developed. Applicability of the model was tested by simulation. Drainage rates of nutrient solution controlled by conventional time clock, integrated solar radiation, and the developed model were 61%, 20%, and 32%, respectively in cucumber perlite culture.
시설원예의 적지평가모델 개발 -중요도 평가기법의 비교 고찰-
황한철 ( Hwang Han Cheol ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),남상운 ( Nam Sang Woon ),홍성구 ( Hong Seong Gu ),김정식 ( Kim Jeong Sik ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-
It is necessary to evaluate the location suitability of protected horticulture facilities to guide and/or to plan new protected horticulture facilities in rural areas. For objective and systematic evaluation of location suitability of protected horticulture, three different evaluation models were constructed based on grading, proportion, and analytic hierarchy process(AHP). The models were used to evaluated the suitability of protected horticulture in three selected regions; suburban, plain, and mountainous. The results showed that there were significant differences in evaluation results of each model among the three regions.
황한철 ( Hwang Han Cheol ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),남상운 ( Nam Sang Woon ),홍성구 ( Hong Seong Gu ) 한국농공학회 1998 韓國農工學會誌 : 전원과 자원 Vol.40 No.2
Location patterns of protected horticulture were analyzed using a multiple correspondence analysis(MCA). The analysis could be used in evaluating location suitability of protected horticulture. The location factors of the protected horticulture for MCA include land category, size of protected horticulture, land slope, topography, effictive soil depth, irrigation and drainage condition, distance from roads, and so forth. The results showed that there were three different location patterns of protected horticulture. The first pattern was characterized by their nearness to villages. The facilities of this pattern were mainly located near to residential area. The second pattern was of those found in plain area. The facilities of this pattern were large in scale and located in paddy field far from residential area. The facilities of the last pattern were small in scale and located on non-paddy fields. They were mostly found in hilly or mountainous area.
이남호 ( Lee Nam Ho ),황한철 ( Hwang Han Cheol ),남상운 ( Nam Sang Woon ),홍성구 ( Hong Seong Gu ),전우정 ( Jeon Woo Jeong ) 한국농공학회 1998 韓國農工學會誌 : 전원과 자원 Vol.40 No.6
A survey was conducted to get information on the utilization of irrigation systems for greenhouse farming. Three regions were selected which represent geographical chatacteristics such as neighboring urban area, flat-field area, and mountainous area. The number of greenhouses farms interviewed was 432 in total. The contents of the survey consisted of general characteristics of greenhouse farmers, the size and location of greenhouses, cultivated crops, irrigation method, irrigation scheduling, and irrigation automation. The analysis of the surveyed data showed that greenhouse farmers did not take technical assistances. Proper criteria or guidelines for selection and operation of irrigation systems were not available. Irrigation systems were operated by hand. Irrigation scheduling were executed by farmer's experience. Maintenance of irrigation systems in general were poor. Development of economically reasonable irrigation system is of importance.