로우터리 맥류파종기 경운날의 개량시험

김성래,김문규,김기대,허윤근 ( Soung Rai Kim,Moon Kyu Kim,Kee Dae Kim,Yun Kun Hur ) 한국농업기계학회 1979 바이오시스템공학 Vol.4 No.1

로우터리 경운시스템의 소요동력에 미치는 영향

김성래,장동일,권순구,안영호 ( Soung Rai Kim,Dong Il Chang,Soon Goo Kwon,Young Ho Ahn ) 한국농업기계학회 1984 바이오시스템공학 Vol.9 No.2

이모작답(二毛作畓)에 있어서 수도이앙기(水稻移秧機)의 실용화(實用化)에 관(關)한 연구(硏究)

김성래,김영래,조재성,이상우,Kim, Soung-Rai,Kim, Young-Rae,Jo, Jai-Seong,Lee, Sang-Woo 충남대학교 농업과학연구소 1977 Korean Journal of Agricultural Science Vol.4 No.1

수도재배(水滔栽培)에 기계이앙(機械移秧)을 실시(實施)하기 위(爲)하여 조생통일외(早生統一外) 3개(固) 품종(品種)을 4월(月) 16일(日)부터 10일(日) 간격(間隔)으로 3회(回) 상자육묘(箱子育苗)하고 40일묘(日苗)를 이앙기(移秧機)로 이양(移秧)하였던 바 묘(苗)의 생육(生育)과 기계이앙후본답(機械移秧後本畓)에서의 수도(水滔)의 생육(生育)과 수량(收量)을 조사(調査)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 40일묘(日苗)의 초장(草長)과 엽수(葉數)는 관행육묘(慣行育苗)에 비(比)해 상자육묘구(箱子育苗區)에서 현저(顯著)히 짧은 경향(傾向)이었으며 상자육묘(箱子育苗)의 경우 물못자리 상자육묘구(箱子育苗區)의 초장(草長) 및 엽수(葉數)가 밭못자리구(區)보다 현저(顯著)히 길었다. 2. 40일묘(日苗)를 단근(斷根)하여 발근력(發根力)을 시험(試驗)한 결과(結果) 상자육묘구(箱子育苗區)의 발근력(發根力)은 관행육묘구(관行育苗區)의 발근력(發根力)에 비(比)해 현저(顯著)히 낮았다. 한편 같은 상자육묘구(箱子育苗區)에서는 물못자리 상자육묘구(箱子育苗區)의 묘(苗)의 발근력(發根力)이 밭못자리에 비(比)해 높은 경향(傾向)이었다. 3. 본시험(本試驗)에 공시(供試)된 유일계(流一系) 품종(品種)은 상자육묘(箱子育苗)의 경우 못자리에서 25~30일(日) 경(頃) 부터 잎의 상부가 황변(黃變) 내지 황적색(黃赤色)으로 변(變)하고 생육(生育)이 거의 정지(停止)되는 현상(現像)을 나타내었다. 4. 상자육묘(箱子育苗)의 기계이앙구(機械移秧區)는 관행육묘이앙구(慣行育苗移秧區)에 비(比)해 활착(活着)이 5~7일(日) 이상(以上) 지연되었으며 출수기(出穗期)도 품종(品種)에 따라 차이(差異)가 있으나 대체로 5~7일(日) 지연되었다. 5. 정조수량(正粗收量)은 유신(維新)의 관행재배구(慣行栽培區)에 비(比)해 모두 약간의 감수(減收)를 보였는데 기계이앙구내(機械移秧區內)에서는 5월(月) 26일(日) 이앙(移秧)의 경우 통일(統一)의 수량(收量)이 가장 높았고 6월(月) 15일(日)의 수량(收量)은 밀양(密陽) 15호(號)가 가장 많았으며 기계이앙재배(機械移秧栽培)를 위(爲)한 품종(品種)의 선택(選擇)은 중요(重要)한 것으로 인정(認定)된다. 6. 수도이앙기(水滔移秧機)로는 $3.3m^2$당(當) 이앙주수(移秧株數)를 73주(株)부터 108주(株)까지 조정(調整)이 가능(可能)하며 파종밀도(播種密度)가 균일(均一)하면 결주율(缺株率) 1% 미만(未滿)의 작업정도(作業精度)로 인력이앙작업(人力移秧作業)에 비(比)하여 2조(條)의 경우 5~6배(倍)의 이앙작업능률(移秧作業能率)을 올릴 수 있으므로 단작지대(單作地帶)에서는 실용화(實用化)가 용역(容易)하리라 믿는다. 7. 이모작지대(二毛作地帶)에서는 이앙시기(移秧時期)가 한정(限定)되어 있으므로 적절(適切)한 품종(品種)의 선택(選擇)과 상자묘(箱子苗)의 육묘기술(育苗技術)이 개발(開發)된다면 수량(收量)은 감소(減少)없이 이앙작업(移秧作業)의 기계화(機械化)가 무난(無難) 할 것으로 전망(展望)된다. In order to investigate the effects of mechanical transplanting on the rice, four rice varieties including Jo-saing Tongil were planted in case nursering bed for three times with 10 days interval beginning from April 16. Fourty days old seedlings were transplanted with rice-transplanter, and growth habits of seedlings in bed and rice plants in main field and yield were examined and summerized as follows: 1. The plant height and number of leaves of the 40 days old seedling in case nursery bed were appeared to be less than those of seedlings grown in ordinary nursery bed. In case nursery, the plant height and number of leaves of seedlings grown in case nursery were apparently higher than those of seedlings grown in upland case nursery. 2. The root of 40 days old seedlings were cut to investigate the rooting ability of seedlings, and the rooting ability of the seedlings grown in the case nursery bed were apparently lower in the rooting ability compared with the seedlings grown in ordinary nursery bed. The rooting ability of the seedlings grown in the lowland case nursery was higher than that of the seedlings grown in the upland case nursery. 3. The tip of leaves of the varieties derived from Indica type were becoming yellow and yellow-red in color 25 to 30 days after planted in the case nursery bed. Those varieties was almost stopped growth. 4. The seedlings transplanted by transplanter had shown more than five to seven days of delay in rooting, compared with the seedlings transplanted by ordinary method. The heading dates was delayed five to seven days when transplanter was used, even though the delay of heading dates was a little different depending on the varieties. 5. The yields of unhulled rice were a little lower than that of Yusin variety which was hand planted. When mechanically transplanted, the yield of Tongil variety was highest in the plot where seedlings were transplanted on May 26. When transplanted on June 15, Milyang#15 was highest in yield, indicating the importance of varietal selection in mechanical transplantation. 6. The rice transplanter could transplant from 73 to 108 seedlings per $3.3m^2$. If the seeds of rice were evenly planted in the bed, the two-row rice transplanter could be used five to six times more effectively with less than one percent of missing plant compared with the hand transplanting. This suggests that rice transplanter could be utilized in the mono cropping area. 7. Since the time of transplantings in the double-cropping area is rather limitted, mechanical transplantation might be possible without reducings yield providing better adapted varieties and improved case-nursery techniques.

볏단크기의 변화가 바인더에 의한 수확작업과 탈곡작업에 미치는 영향

김성래,안수봉,김기대 ( Soung Rai Kim,Su Bong Ahn,Kee Dae Kim ) 한국농업기계학회 1980 바이오시스템공학 Vol.5 No.1

충남지방(忠南地方)의 농업기계(農業機械) 훈련실태(訓練實態)에 관(關)한 조사(調査)

김성래,이상우,김만수,Kim, Soung-Rai,Lee, Sang-Woo,Kim, Man-Su 충남대학교 농업과학연구소 1977 Korean Journal of Agricultural Science Vol.4 No.1

This survey was conducted to secure a basic data for the effective training programs that might be an essential part of any successful mechanization of agriculture in Korea. Chung Nam provincial training center and 17 guidance offices with farm machinery training centers which were thought to be a medium level on their scale in whole country were selected in the survey on its training accomplishments, stafts, facilities, schedule and number of trainees at one time or in a class. The results and recommendations from this survey were as follows; To enhance the effect of farm machinery training, it was absolutely necessary for city or county training center to complement its facilities and equipments. It might be desirable that instructors of each training center should be the one educated or highly trained in the institution of farm machinery, and that the number of technical assistants should be increased and their present part time working condition should be changed to full-time status. It was recommended that training for farmers should be scheduled during off-season so that farmers could participate in the training couses, and that the number of trainees in a class should be reduced to about 10 trainees, which was approximately a fourth of the present situation. 농업기계(農業機械) 훈련업무(訓練業務)의 능률화(能率化)를 위(爲)한 기본자료(基本資料)를 얻기 위하여 충남지방(忠南地方)의 농업기계(農業機械) 훈련기간(訓練機間)인 도(道) 농민교육원(農民敎育院)과 17개(個) 시(市) 군(郡) 훈련소(訓練所)를 대상(對象)으로 훈련실태(訓練實態) 및 훈련기간(訓練機間)의 실태(實態) 등(等)을 분석(分析)했던 바 다음과 같은 결론(結論)을 얻었다. 1. 농업기계(農業機械) 훈련(訓練)의 효과(效果)를 높이기 위(爲)해서는 시(市) 군(郡) 농업기계(農業機械) 훈련소(訓練所)의 타설(拖設) 및 장비(裝備)의 보완(補完)이 절실히 필요(必要)하며 2. 각급(各級) 농업기계(農業機械) 훈련소(訓練所)의 교관(敎官)은 농업기계(農業機械)의 전문교육(專門敎育)을 이수(履修)한 자(者)로 보완(補完)하는 것이 바람직하며 기술요원(技術要員)의 수적(數的) 안배(按配)와 이들의 직급(職級)올 정규화(定規化)하는 것이 요망(要望)된다. 3. 효과적(效果的)인 훈련(訓練)을 진행(進行)키 위(爲)해서는 훈련시기(訓練時期)를 농한기(農閑期)로 하여야 할 것이며 1개(個) 반(班)의 인원(人員)도 현재(現在)의 약(約) 1/4인 10명(名) 내외(內外)로 편성하는 것이 바람직하다.

곡물건조저장법(穀物乾燥貯藏法) 개선(改善)을 위(爲)한 농가용(農家用) Grain Bin에 관(關)한 연구(硏究)

김성래 ( Soung Rai Kim ) 한국농공학회 1974 韓國農工學會誌 : 전원과 자원 Vol.16 No.1

Experimental work of grain bin was carried out to develop the methods of natural air in-bin drying and storage. The method is considered to be more economical, labour saving, and an effective countermeasure to grain loss. To examine the possibility of farm use of the grain bin and to analyze the related factors concerned with in-bin grain drying and storage, ambient air conditions (especially the change of air temperature and relative humidity) and grain quality during drying and storage periods were investigated. A laboratory model bin was constructed to investigate the effect of different forced air conditions on the drying characteristics of rice. In addition, a grain bin with 2.2m diameter and 1.8m height, considered to be the optimum size for the average Korean farm, was constructed and tested to examine the drying and storing characteristics of rice. The weather data analyzed in this study was the nine-year (from 1964 to 1972) record of air temperature and relative humidity in the Suweon area, and the thirty-year (from 1931 to 1960) record of pentad normal relative humidity and air temperature in the Seoul area. From the results of the weather data analyses, the adequate air delivery hours (which was arbitrary defined as the condition to give less than 75% relative humidity) to dry the rice during October were about nine hours (from approximately 10 A.M. to 7 P.M.) a day, in which the average air temperature was about 15.9℃ and average relative humidity was 66%. The occurence of days having three hours of such conditions was 1, 2, and 1-day within the 1st, 2nd add last 10-day periods for the month of October, respectively. Therefore, it may be considered that the weather condition in October was satisfactory for the forced natural air drying. The results of the laboratory model bin test were analyzed to obtain the drying curve and drying rate for different drying stages and grain layers in the bin corresponding to various conditions of forced natural air. A drying experiment with a prototype grain bin showed that an approximate 5 percent grain moisture gradient through a 1.6 meter grain deposit was observed after 80 hours of intermittent drying, giving an over dried zone in the lower grain layers and an extremely high grain moisture zone in the upper layers. This indicates that an effective measure should be taken to reduce this high moisture gradient. In order to investigate the drying characteristics of bulk grain in a layerturning operation a grain bin test was performed. This showed a significant improvement of uniform drying. In this test, approximate 107 hours were required to dry a depth of 1.6 meter of grain from an initial moisture content of 22.2 percent to a moisture content of 16.7 percent using an air delivery rate of 2.8 cubic meter per a minute per every cubic meter of grain. This resulted in a 2 percent moisture gradient from the top to the bottom of the bin. During storage period, till the end of June the average temperature of grain was 2~3℃ higher than ambient air temperature. But during July when the grain moisture content went up slightly (less than 1 percent), the average temperature of the grain also increased to 3~5℃ higher than ambient air temperature. It is therefore recommended that for safe grain storage, grain should not be stored in sheet metal bins after mid May. From the above results, in-bin rice drying and storage can be used effectively on Korean farms. It is strongly recommended that the use of grain-bin system should be implemented for farm use to improve farm drying and storage of rice.

二毛作畓에 있어서 水稻移秧機의 實用化에 關한 研究

金聲來(Soung-Rai Kim),金映來(Young-Rae Kim),曺在星(Jai-Seong Jo),李相祐(Sang-Woo Lee) 충남대학교 농업과학연구소 1977 農業技術硏究報告 Vol.4 No.1

수도(手稻)의 파종양식(播種樣式)과 파종량(播種量)이 이앙기용(移秧機用) 묘소질(苗素質)에 미치는 영향(影響)

김문규,김성래,안수봉,Kim, Moon-Kyu,Kim, Soung-Rai,Ahn, Su-Bong 충남대학교 농업과학연구소 1978 Korean Journal of Agricultural Science Vol.5 No.2

수도(水稻)의 성묘기계이앙(成苗機械移秧)에 알맞은 건묘(健苗)를 육성(育成)해 내고자 산파식(散播式)인 mat묘(苗)와 조파식(條播式)인 단책묘(短冊苗)의 우열(優劣)을 여러 파종량하(播種量下)에서 비교검토(比較檢討)한 바 다음과 같은 결과(結果)를 얻었다. 1. 20일묘(日苗)에서는 파종양식간(播種樣式間)에 생육상(生育相)과 묘소질(苗素質)의 차이(差異)를 별반 인정(認定)할 수 없었으나 30일묘(日苗)에서는 단책묘(短冊苗)가 mat묘(苗)보다 평균생장속도(平均生長速度)와 상대생장율(相對生長率)이 다같이 크고 묘(苗)의 건물중(乾物重), 탄수화함량(炭水化含量) 및 건물중대초장비율(乾物重對草長比率)도 무겁고 커서 건묘(健苗)의 소질(素質)을 가지고 있었다. 그러나 40일묘(日苗)에서는 그차이(差異)는 축소(縮小)되었으며 묘령(苗令)의 진전(進展)은 거의 인정(認定)할 수 없었다. 2. 묘(苗)의 생장량(生長量)은 박파(薄播)일수록 많고 밀파(密播)와의 차이(差異)는 육묘일수(育苗日數)가 연장(延長)됨에 따라 커졌으며 밀파(密播)의 한계(限界)는 단책묘(短冊苗)에서는 묘상자당(苗箱子當) 200cc이고, mat묘(苗)에서는 250cc 정도(程度)였었다. 3. 단책묘(短冊苗)는 mat묘(苗)보다 초장(草長)과 엽령(葉令)등의 변이계수(變異係數)가 큰 것으로 보아 묘(苗)의 균일성(均一性)은 mat묘(苗)보다 결여(缺如)되는 것 같으며 앞으로 검토(檢討)를 요(要)할 것으로 사료(思料)된다. In order to get healthy seedling of rice suitable for rice transplanter, the growing characteristics of the seedling grown under different growing days and sowing densities were invesigated and the results obtained were summarized as follows; In the 20 days old seedling, the difference of growing state of seed ling and its characteristics between the two types of nursery bed was not found, but for the 30 days old seedling, both of the crop growth rate and the relative growth rate on the band-type nursery bed appeared higher than those on the mat-type nursery bed. And also, "the dry weight, the content of cardohydrate and the ratio of dry weight to plant height of the seedling grown on the band-type nursery bed were much higher than those on the mat-type nursery bed, however the amount of difference of seedling characteristics between two types of nursery bed was decreased for 40 days old seedling and leaf number was not increased. The amount of the seedling growth was increased with less density of sowing and for the difference between the higher and the less density, the difference getting bigger with the longer nursery days. The maximum density of sowing was approximately 200cc per nursery case on the band-type nursery bed and 250cc per nursery case on the mat-type nursery bed. It was seemed that the growing uniformity of the seedling grown on the mat-type nursery bed was better than that on the band- type nursery bed, As the coefficient of variation of the plant height and the leaf numbers of the seedling grown on the band- type nursery bed was higher than that on the mat-type nursery bed.

냉각수(冷却水) 용량(容量)이 소형(小型) 디젤기관(機關)의 성능(性能)에 미치는 영향(影響)

명병수,김성래,Myung, Byung Soo,Kim, Soung Rai 충남대학교 농업과학연구소 1986 Korean Journal of Agricultural Science Vol.13 No.2

동력경운기(動力耕耘機) 탑재용(塔載用) 6kW 수냉식(水冷式) 디젤기관(機關)의 성능향상(性能向上)을 도모(圖謀)하기 위(爲)하여 현존(現存)의 냉각장치(冷却裝置)는 그대로 이용(利用)하고 냉각수(冷却水) 용량(容量)만을 2700cc에서 2800cc, 2900cc, 3000cc, 3100cc 로 4수준(水準)으로 변화(變化)시키면서 기관(機關)의 출력(出力), 연료소비율(燃料消費率), Torque, 냉각수(冷却水) 및 윤활유(潤滑油)의 온도(溫度)와 기관(機關)의 마찰손실(摩擦損失)을 D.C. dynamometer를 이용(利用)하여 측정(測定)한 결과(結果)는 다음과 같은 결론(結論)을 얻었다. 1. 공시기관(供試機關)의 출력성능(出力性能)은 한국공업표준규격범위(韓國工業標準規格範圍)에는 들었으나 정격표시마력(定格表示馬力)이 실험결과(實驗結果)보다 약(約) 10% 정도(程度) 낮게 표기(表記)되어 있으며 연료소비율(燃料消費率)은 297.78g/kW-h 로 약간(若干) 높은 수준(水準)이었으며 냉각수(冷却水) 온도(溫度)는 $101^{\circ}C$로 SAE기준(基準)인 $88^{\circ}C$보다는 $13^{\circ}C$ 정도(程度)가 높았다. 2. 공시기(供試機)의 마찰손실(摩擦損失)은 정격상용회전(定格常用回轉)인 2200rpm에서 3.65kW 이었으며 기보고(旣報告)된 측정치(測定値)보다 약간(若干) 높은 범위(範圍)이었다. 3. 냉각수(冷却水) 용량(容量)을 2700cc에서 3100cc로 14.8% 증가(增加)시켰을 때 출력(出力)은 6.7kW에서 7.13kW로 0.43kW의 6.3%가 증가(增加)하였다. Torque도 냉각수(冷却水) 용량(容量) 2700cc일 때 28.85N.m에서 3100cc일 때 30.706N.m로 6.39%가 증가(增加)하는 경향(傾向)을 보였다. 4. 냉각수(冷却水) 용량(容量) 2700cc에서 3100cc로 증가(增加)시켰을 때 연료소비율(燃料消費率)은 310.85g/kW-h에서 304.14g/kW-h로 6.69g/kW-h가 감소(減少)하였으며 30분간(分間) 전하중운전시(全荷重運轉時) 냉각수(冷却水)의 온도(溫度)는 냉각수(冷却水) 용량(容量)이 2700cc에서 $101^{\circ}C$였고 냉각수(冷却水) 용량(容量)이 3100cc에서 $88^{\circ}C$로 $13^{\circ}C$가 감소하여 3100cc일 때는 SAE 표준(標準)과 같았고 윤활유(潤滑油) 온도(溫度)는 냉각수(冷却水) 용량(容量)이 2700cc일 때, $76.7^{\circ}C$였으며 냉각수(冷却水) 용량(容量)이 3100cc에서는 $70.4^{\circ}C$로 $6.4^{\circ}C$가 감소하였다. 5. 기계효율(機械效率)은 냉각수(冷却水) 용량(容量)이 2700cc에서 70.08%였고 냉각수(冷却水) 용량(容量)이 3100cc일 때는 71.08%로 0.95%가 증가(增加)하였다. This study was attempted to improve the thermal efficiency of 6 kW water-cooled diesel engine on power tiller. The engine performance tests were conducted to find out the effect of cooling water capacity of 2700cc, 2800cc, 2900cc, 3000cc, 3100cc on power, brake specific fuel consumption (BSFC), torque, temperature of cooling water and lubricating oil and friction losses of the engine with D. C. dynamometer. The results obtained in the study are summarized as follows: 1. The performance of the engine tested was adequated to Korea Industrial Standard but actual economy power was 10% higher than the labeled rated power of the engine. The BSFC of the engine tested 297.8g/kW-h which is belong a little higher level than hreign products. The temperature of cooling water was $101^{\circ}C$ which is higher than SAE standard ($88^{\circ}C$) 2. The friction losses of engine tested was 3.656 kW at 2200 rpm of rated rpm (piston speed 6.97m/sec) and is higher than those of foreign products. 3. When the cooling water capacity was increased from 2700cc to 3100cc the power output of the engine was increased from 6.7 kW to 7.13 kW at the rate of 6.4% and also the torque of the engine was increased from 28.85 N.m to 30.76 N.m at the rate of 6.39%. 4. When the cooling water capacity was increased from 2700cc to 3100cc, the BSFC was decreased 6.9g/kW-h from 310.9g/kW-h to 304.1g/kW-h, and after one half hour operation with full load, the temperature of cooling water was decreased $13^{\circ}C$ from $101^{\circ}C$ to $88^{\circ}C$ and also the temperature of lubricant oil was decreased $6.4^{\circ}C$ from $76.7^{\circ}C$ to $70.4^{\circ}C$. 5. The mechanical efficiency was increased from 70.08% to 71.08% when the cooling water capacity was increased from 2700cc to 3100cc.

농업기계화(農業機械化)에 관(關)한 연구(硏究) - 수도이앙작업(水稻移秧作業)의 기계화(機械化)를 중심(中心)으로 -

안수봉,김성래,김기대,Ahn, Su Bong,Kim, Soung Rai,Kim, Ki Dae 충남대학교 농업과학연구소 1981 Korean Journal of Agricultural Science Vol.8 No.2

수도작(水稻作) 기계화일관작업체계(機械化一貫作業體系)를 통(通)하여 이앙시기(移秧時期)의 노동(勞動)Peak를 해소(解消)하고 또한 소요노동력(所要勞動力) 절감(節減)으로 수도생도비(水稻生度費)의 절감(節減)을 위한 이앙작업(移秧作業)의 기계화(機械化)는 우리나라 현여건하(現與件下)에서 매우 시급(時急)한 과제(課題)이다. 본(本)연구(硏究)는 수도이앙작업(水稻移秧作業) 기계화(機械化)의 보다 적극적(積極的)인 추진(推進)을 위한 기초자료(基礎資料)를 얻기 위해 충청남도(忠淸南道) 일반농가(一般農家) 381호(戶)를 대상(對象)으로 이앙기(移秧機) 이용실태(利用實態) 및 소유성향(所有性向)에 대(對)하여 설문조사 및 청취조사를 실시(實施)하였다. 이 조사자료는 충남대학교(忠南大學校) 전자계산소(電子計算所)의 Computer로 통계(統計) Package인 STATS에 의(依)해 분석(分析)되었다. 이 연구(硏究)에서 밝혀진 중요(重要)한 결과(結果)는 다음과 같다. 1. 이앙기(移秧機) 소유(所有) 형태(形態)는 76.09%가 개인소유(個人所有)이나 앞으로 2~3년이내(年以內)에 구입희망농가(購入希望農家)는 52.27%가 공동소유(共同所有) 공동이용(共同利用) 희망(希望)하므로 공동(共同) 이용체제(利用體制)에 대(對)한 연구(硏究)가 보다 강화(强化)되어야 할 것이다. 2. 이앙기(移秧機)로 이앙(移秧)한 수도(水稻)의 수량(收量)은 응답자(應答者)의 91.33%가 증수(增收)되거나 별차(別差)가 없는 것으로 나타나 앞으로 수도이앙기(水稻移秧機)의 농촌보급(農村普及)이 증가(增加)될 것으로 전망(展望)된다. 3. 이앙기소유농가(移秧機所有農家)의 73.26% 산파묘(散播苗) 4조용(條用)을 보유(保有)하고 있으나 2~3년내(年內)에 구입(購入) 희망(希望)하는 농가(農家)의 25.0%가 띠묘(苗) 4조용(條用)을 희망(希望)하므로 띠묘(苗) 4조용(條用)에 대한 농촌보급문제(農村普及問題)도 그 기계(機械)의 특성(特性)으로 보아 재고(再考)되어야 할 것이다. 4. 이앙기소유농가(移秧機所有農家) 및 구입희망농가(購入希望農家)의 부락공동육묘(部落共同育苗)에 대(對)한 희망도(希望度)가 49.71~57.83%로 높으므로 공동육묘(共同育苗)에 대(對)한 기술지원(技術支援) 체제(體制)가 보다 강화(强化)되어야 할 것이다. Mechanization of rice transplanting operation is very important project not only to solve the labor shortage problem at the so-called labor demand peak seasons of the rice transplanting, but also to reduce the production cost of rice by reducing the labor requirements. For these reasons this study was carried out to find the basic data for encourage the project of mechanization of rice transplanting. 381 sample farms were surveyed with questionaries and interviewed with a considerable number of relative personels about the operation, selecting and ownership trend of the rice transplanter. Collected data was analized by computer of Chungnam National University computer center applied to frequencies, cross- tabulation, $x^2$-test. The analized results of this survey are summarized as follows; 1. About 76.09% of the farmers interviewed was individual ownership of rice transplanter but about 52.27% of the farmers who wanted to purchase it in 2 or 3 years supported the cooperative ownership and utilization. This fact suggested that cooperative system of village level should be thoroghly studied. 2. The 93.33% of respondents gave the answer that the yield of rice was not affected by the planting methods between machine and manual. 3. The farmers who had a rice transplanter owned 4- row type rice transplanter with mat type seedling but the 25% of the farmers wanted to purchase it in 2 or 3 years wanted to own a 4 row type rice transplanter with band type seedling. Therefore the introduction of the 4-row type rice transplanter with band type seedling to rural area should be considered again. 4. The percent of farmers who wanted the cooperative system of village level was 49.57-57.83% of the farmers who had it already and wanted to own it in near future. It was strengthened by this fact that seedling nursely work was technically supported by the governmental level.