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최대경계선을 이용한 벼 수량의 기상반응분석과 수량 예측 2 . 수량예측모형 검증
김창국(Chang Kug Kim),한원식(Weon Sik Hahn),이변우(Byun Woo Lee) 한국농림기상학회 2002 한국농림기상학회지 Vol.4 No.3
Yield prediction model of rice based on the boundary line analysis of the relationships between rice yield and meteorological conditions during rice growing period was reported in the previous report (Kim et al, 2001). Using the 15-year data of the 20 locations used for the model formulation and of the 12 locations not used, the model was tested for its predictability of location to location, year to year, and variety to variety variation of rice yield. The model predicted reliably the mean yield differences among locations, the yearly yield variation in each location, and the yield variation by variety. However, the model showed relatively lower predictability for the years of cool weather injury especially in mountainous locations. In conclusion, the model using boundary line analysis could be used to predict the yield responses to meteorological conditions during rice growth period and the locational, yearly, and varietal variations of rice yield. And the predictability of the present yield prediction model might be improved by including the boundary line analysis for the other factors such as soil characteristics, fertilization levels, etc.
박평식,박준근,한원식 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1
This study aims to analyze the trend of rice economy and production cost in Vietnam. The main rice cultivating regions are Mekong River Delta and Red River Delta. In recent year, about 32 million tones(paddy rice base) of rice produced on the 7,650 thousand ha in the country. About 13∼15 percent(4.15 million tones) of Vietnam rice production exports to other countries. That makes Vietnam is the second exporter of rice in the international market. The current situation and trend of rice industry and structure of production cost in Vietnam are described in this paper.
이상영,천동원,한원식 한국농업정책학회, 한국축산경영학회 2001 농업경영정책연구 Vol.28 No.3
According to the analysis results on Korean cattle cooperatives, it is considered that the conditions of members' welfare, payment and education were poor because of short establishment period and unexpected financial crisis. However, the representative's farm management ability and planning was well prepared. Viewing the components of investment in the cooperative, while the proportion of investment in kind was getting bigger, investment in cash and in kind were increased by 28.6% and 78.2%, respectively compared with the beginning stage. Most of the investment in kind was destined to land and facilities. Per capita investment was increased by 11.6million won from 21.3million won at the beginning to 32.9million won. The component ratios of fixed capital such as facility and equipment were composed of 36.4% of subsidy, 43.1% of loan and 20.5% of self-support. Results of the economic analysis on the cooperatives by farming system identified that the highest profitability and productivity were achieved by Type II on increasing value-added followed by Type I of concentrating on hanwoo production, Type III on selling input and Type IV on saving input. Investment analysis based on the amount of allowable investment limit also shows that all farming systems except Type II invested over an appropriate level. Most influential factors affecting cooperative's profitability were record keeping and selling type. The effects of the cooperatives' operating system and subsidy on profitability were statistically insignificant.