• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.53-53
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• 2017

연구목적: 국내 과일 산업의 한 단계 도약과 대외 경쟁력을 높이기 위해서는 수확작업의 기계화가 시급함. 이 연구는 국내외 과일 수확 기계화 현황과 문제점을 분석하고, 향후 수확작업 기계화 방향을 제시하고자 수행 수확기계 실용화 현황 및 고찰 (국내) 과일을 직접 수확이 아닌 수확 작업을 보조해주는 고지 작업기(수동형, 모터 진동형)와 고소 작업차가 대부분임. 수동형은 사과 감 등을 수확하지만, 작업능률이 낮고 작업자가 쉽게 피로하여 장시간 작업이 불가능하므로 실질적인 대안이 되지 못함. 진동형은 자체 동력을 이용하여 나무에 진동을 가하여 주로 대추 매실 등 소과류 수확에 이용되고, 수확능률은 우수하나 충격 손상이 많아 개선이 요구됨. 고소작업차는 동력원에 따라 충전식과 엔진식으로 구분되고, 충전식은 엔진식에 비해 진동 소음이 적어 쾌적하지만, 작업시간이 배터리 용량에 제한을 받음. 또한 작업대 작동방식에 따라 리프트형과 붐형으로 구분함. 리프트형은 리프트를 이용하여 작업대를 상하로 구동하는 방식으로 높은 위치의 과실 수확이 어렵고, 작업대 넓이 만큼의 작업 공간(과수간의 거리)이 필요함. 붐형은 필요한 곳으로 접근성이 우수하나 무거운 무게를 지탱하기 어렵기 때문에 본체를 무겁게 하거나 수시로 수확된 과일을 하차시켜야 함. (국외) 수확 후 가공되는 과일류와 포도 올리브 오렌지 매실 등 소과류 수확이 기계화되었지만, 사과 복숭아 등 신선과일은 아직도 외국의 값싼 노동자들에 의존하여 수확되고 있음. 현재 실용화된 수확 기계는 진동식 수확기계와 터널식 수확기계가 대표적임. 진동식은 집게형의 부착기를 나무 줄기에 고정한 후 트랙터 동력원으로 나무에 진동을 가하여 수확하고, 올리브 대추 등과 같은 소과류와 과피가 두꺼운 오렌지 등에 적용되고, 수확 작업능률이 매우 높으나 과일의 낙하 상처를 피할 수 없는 단점이 있음. 터널형은 규격화(과수 크기 및 형태, 재식거리)된 과수원에 잘 적응하도록 설계 제작되어, 과수 위를 지나가면서 내부에 설치된 진동장치와 컨테이너로 과일을 수확하고, 와인용 포도 수확기가 대표적임. 기계수확이 가능하도록 과수원 조성단계에서부터 재배양식(과수 좌우 및 전후 거리)을 기계의 제원(바퀴 간격, 작업부 간격 등)에 맞추어 재배함. 과일 수확로봇에 관한 연구는 활발하고 일부에서 실증시험단계에 있음. 결론: 구체적인 추진방향을 제시하면, 단기적으로는 과일 수확작업자의 작업편이성과 노동강도를 줄일 수 있도록 소형 저가 범용성이 우수한 보조기구/기계의 보급을 확대하고, 중장기적으로는 수확기계/수확로봇 개발을 위한 연구개발비 투자를 늘리는 동시에, 기계/로봇이 과수원에 잘 적응할 수 있도록 수형 재식거리 등 재배양식의 표준화가 추진되어야 함.

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.10a
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• pp.54-54
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• 2018

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.4
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• pp.360-366
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• 2021

Garlic is an important crop, accounting for 1.1 trillion won out of 3.7 trillion won for the total production of seasoned vegetables in Korea. On the other hand, the cultivation area and production volume are decreasing continuously due to the shortage of an agricultural labor force, aging, and insufficient mechanization. In particular, the mechanization of garlic sowing is barely performed, resulting in large amounts of labor. Therefore, it is necessary to study the mechanization of planting garlic. Therefore, in this study, to determine the optimal working conditions for mechanical sowing of garlic, an experiment was conducted to compare the yield according to the sowing angle and depth of garlic during sowing. After sowing using a seeding machine set under optimal conditions, the conventional work and yield were compared. The results showed that it is most appropriate to sow garlic with a sowing angle of 45° or 90° and a depth of 2 cm to 4 cm, and there is no difference in the yield between sowing with a sowing machine and conventional work.

• Journal of Korean Society of Forest Science
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• v.86 no.4
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• pp.450-458
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• 1997

It is inadequate to compare operating costs between some logging machines with a low rate of utilization of them except the effect of operating time. The operating volume to maximize the utilization of the logging machines is different from each other, thus it is important to choose the proper logging machines and operating system according to the size of logging management. This study presents one of the methods to choose the economical optimum logging machines according to the operating volume to promote the economical efficiency of the machines. In order to go ahead with the Korean forestry mechanization plan, it should be considered which machine or operating system has the economical priority and if it can be suitable to the effect of wage increment.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.121-127
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• 2002

당근은 미나리과에 속하는 직근성 채소로서 비타민A가 다량 함유된 건강식품으로 우리나라에 6,000㏊ 내외로 재배되고 있다. 재배지역은 우리나라 전체 재배면적 중에서 남제주군 지역이 44.5%, 경남 김해, 양산지역이 16.1%, 강원 평창지역이 11.1%를 점유하고 있으며 총 재배면적의 70% 이상이 주산단지 화되어 있어 기계화가 용이한 작목이다. 당근재배에 있어서 10a당 작업단계별 노동투하시간을 보면 전체 100.2시간으로 경운정지, 방제작업만 기계화가 이루어지고 대부분 인력에 의존하고 있는 실정이다. (중략)

• The Science & Technology
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• v.9 no.8 s.87
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• pp.42-43
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• 1976

인류의 과학기술이 천체 외계에 까지 미치게 되었다. 천체역학의 역사적 배경을 살펴보면 1600년초기 Johannes Kepler(독1571~1630)가 그의 스승 Tycho Brahe(덴마크 1546~1601)의 천체 위치관측(특히 화성)자료를 분석하면서 천체역학의 세 법칙을 발견함에서 비롯되었다. 그후 거의 3세기반이 지난 20세기 후반에 와서 천체역학 혹은 궤도역학을 이용하여 인공위성을 띄우게 되는 실용기를 맞이한 것이다. 다른 공학을 보게되면 이론이 정립되고 그것이 하나의 기계화로서 실용화 되는 것이 수년내에 여러사람에게 혜택을 주게되지만 천문학의 일분야인 천체역학은 인공위성을 띄워서 과학연구를 비롯하여, 통신, 기상예보, 자원개발, 농사수확예보등 인류전체에게 혜택을 주기까지 무려 3세기반이 걸린 것이다.

• Korean Journal of Plant Resources
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• v.37 no.1
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• pp.71-78
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• 2024

This study was in order to select soybean (Glycine max (L.) Merrill) cultivars that are suitable for cultivating in paddy fields of the southern Korea and beneficial for mechanized harvesting with combine harvesters. Five soybean cultivars were cultivated in paddy fields to survey growth characteristics and seed yield, and evaluate the nutritional value of seed. Plant height was longer than 55 cm for 'Cheongja-3ho', 'Daewon' and 'Seonpung'. First pod height was higher than 12 cm for 'Daewon', 'Seonpung', and 'Seonyu-2ho'. Seed yields were 280 kg/10a or more for 'Daechan', 'Seonpung' and 'Daewon'. The protein content of 'Daechan' were 40.7%, which was significantly higher than those of the other cultivars, and isoflavone content was higher than 200 ㎍·g^-1 for 'Seonpung', 'Cheongja-3ho', 'Daechan', and 'Daewon'. These results suggest that 'Daechan', 'Seonpung', 'Daewon' could be suitable for cultivating in paddy fields, and 'Daewon' and 'Seonpung' could be more beneficial for mechanized harvesting with combine harvesters. Furthermore, 'Daechan' and 'Seonpung' have not only high seed yields, but also high protein and isoflavone contents, suggesting that they could be used for production of various food products.

• Journal of Korean Society of Forest Science
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• v.82 no.2
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• pp.195-206
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• 1993

The purpose of this study is to provide a basis for establishing regional harvesting systems that ist the prerequisites for the forest mechanization. The factors restricting to the forest harvesting and logging methods from topographical aspects are studied for this purpose. Three main harvesting methods studied in this paper are : shortwood method, longwood method and full tree method. This study shows : the shortwood method is suitable for low, the longwood method for medium, the full tree method for high topographical conditions. For the logging methods, the focus of the study is on various ground based logging systems by animalpower, manpower, gravitation, wheeled & crawler vehicle and cable. The factors limiting the coverage of logging operation are slope and logging distance. The cable crane logging methods are classified by logging distance into short distance(to 300 or 400m), middle distance(to 700 or 800m) and long distance cable crane methods (over 700 or 800m). The wheeled vehicle method shows serious damages to forest resources, whereas the logging by log-line of the gravitation logging method and cable crane method tend to minimize such damages. The wheeled & crawler vehicle method also shows difficult to apply in the high slope conditions, whereas cable crane method can be applied to maximum 120% steep slope and uphill conditions.

• Korean Journal of Medicinal Crop Science
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• v.2 no.2
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• pp.105-109
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• 1994

This experiment was conducted to know the labor saving effect and reducing production cost by agricultural mechanization in the cultivation of Bupleurum falcatum. Labor reducing effects of the drilling seeder by hand and the machine attached to two wheel tiller were 97%, but emergency rate was highest in the former. Dry root yield per plant was increased by low amount of seed sowing but that yield per unit area was increased at much seeding amount in the seeder attached to the tiller. The drilling seeder by hand was showed highest standing ratio of seedling and produced yield to 84.1kg of root yield per 10a. Labor saving effect was the best at the multipurposes mechanized harvester and labor saving and famer's income ratio were increased to 69% and 50% respectively. Labor time and cost were reduced to 74% and 69% respectively by mechanization of sowing and harvest cultivation practice on Bupleurum falcatum.

• Korean Journal of Breeding Science
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• v.49 no.1
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• pp.41-46
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• 2017

The sorghum (Sorghum bicolor (L.) Moench) variety 'Sodamchal' was developed and registered by Department of Sothern Area Crop Science, National Institute of Crop Science (NICS) in 2013. This variety was developed from the cross between 'Hwanggeumchal' with brown grain and 'Jungmo4001' with semi-dwarf trait. 'Sodamchal' is the first semi-dwarf stature with waxy endosperm ever developed in Korea. The yield performance of 'Sodamchal' was 2.95 MT/ha in local adaptability test for 2 years. It had 91 cm culm length, which was 58 cm shorter than that of 'Hwanggeumchal', 26.3 cm panicle length, 22.0 mm thickness of culm, 21.1 g in 1,000 grain weight. It could be reduce the lodging problem and also adapted to mechanized cultivation. 'Sodamchal' produces high quantities of polyphenol and radical scavenging activitiy with diphenyl-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in pigmented testa. Above all 'Sodamchal' is suitable for use as a parental source for the development of improved pollinator parent lines for developing semi-dwarf sorghum with waxy endosperm and antioxidant activity. (Variety registration No. 6244)