• Journal of Energy Engineering
• /
• v.27 no.3
• /
• pp.10-20
• /
• 2018

Due to cheap electricity tariff on agricultural use, electricity consumption in agricultural sector has grown dramatically. We evaluated the negative effects of the cheap electricity tariff such as electricity over-consumption, increased dependency on electricity, decreased electricity productivity, and unequal distribution of the benefit. We also estimated the effects of agricultral output growth, structural change, and electricity intensity change on sharp electricity consumption increase in agricultural sector between 1998 and 2016 using the Log Mean Divisia Index decomposition method. The findings reinforce the necessity of raising the electricity tariff for agricultural use.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.10 no.1 s.88
• /
• pp.50-54
• /
• 1989

• Agrochemical news magazine
• /
• v.25 no.10 s.203
• /
• pp.10-13
• /
• 2004

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.4 no.5
• /
• pp.37-44
• /
• 1983

• The Korean Journal of Quaternary Research
• /
• v.14 no.1
• /
• pp.33-48
• /
• 2000

Vegetation disturbance history of the Korean Peninsula from the Palaeolithic Age to the Koryo Dynasty (1392) has reconstructed by the use of various data sources. Active vegetation disturbance, which has begun during the Neolithic Age, seems to be more widespread on lowland and coastal areas in the early stages, but later expanded into inland areas. The ploughing of a field and the selective cutting of certain trees, such as oak trees, nettle trees and pine trees are noticeable, and eventually caused deforestation during the Bronze Age. The use of iron tools of the Iron Age has enabled the forest clearing to develope the dry fields. During the Three Kingdoms period (BC 57∼AD 918) extensive deforestation has maintained for the development of cultivated fields, as well as other activities, such as timber, lumbering, production of iron farm implement, ploughing by cattle. The encouragement of disafforestation on mountain slope and creation of terraced field during the Koryo Dynasty (918∼1392) has caused the deforestation over the country, along with the consumption of large amount of wood and timber for fire-wood, ship-building, mining, xylography and so on.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.6 no.1
• /
• pp.23-27
• /
• 1985

지난해에 이어 연속적인 풍년을 이룩하여 주곡의 안정적 자급을 유지하려는 것이 국민 모두의 염원이다. 그러나 풍년농사를 이룩한다는 것은 그렇게 쉬운 것은 아니다. 농민은 농민대로 연중 모든 어려움을 참고 꾸준히 노력하여야 하고 관계 유관기관에서는 농사가 잘 지어질 수 있도록 여러 가지 여건을 사전에 조성하여 주어야 한다. 따라서 금년에도 풍년농사를 기필코 달성하기 위하여 분야별로 치밀한 계획을 수립하여 사전준비를 단계적으로 추진중에 있다. 그중에서도 수량에 가장 영향을 많이 미치는 병충해 방제에 대한 금년도 대책을 약술하면 대략 다음과 같다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.6 no.1
• /
• pp.66-74
• /
• 1985

지난해는 우리 인간(人間)의 생존(生存)에 가장 근본(根本)이 되는 식량증산을 위하여 잘 인내하고 땀을 흘린 보람으로 쌀농사에 있어 4년동안 풍작을 맞이하게 되었다고 생각한다. 매년 농사를 지으면서도 추수할때는 잘못했던 일이 후회되고 앞으로는 잘 해보겠다고 마음을 먹고 다짐도 하여 보지만 막상 농사철이 닥쳐 일을 시작하게되면 지난일을 잊고 과거의 습관대로 되풀이 하는 경우가 많게 된다. 금년에도 소출을 많이 올리기 위하여는 작년 농사에 만족하지 말고 지난해에 잘못 되었던 점을 보완 차분한 영농설계를 하여 꼭 실천 되도록 노력을 해야 할 것이다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.2 no.4
• /
• pp.73-75
• /
• 1981

4월은 무척 바쁜 달입니다. 풍성한 수확을 위해 심고 뿌리며 무럭무럭 자랄 수 있도록 정성껏 가꿀 준비를 해야 되겠읍니다. 포근하고 따스한 봄에게서 움추렸던 겨울을 잊고 명랑하고 기쁜 마음으로 이달의 농사를 설계해야 되겠읍니다.

• Life and Agrochemicals
• /
• s.263
• /
• pp.42-43
• /
• 2010

지금이야 수확철에 콤바인, 트렉터 같은 훌륭한 농기계가 벼나락을 거두어 건조까지 해주는 첨단농업 시대이지만, 마을에 경운기 한두대가 전부였던 30년전 가을 걷이는 정말 손이 농사도구이 전부인 농기계였다.

• Korean Journal of Soil Science and Fertilizer
• /
• v.35 no.6
• /
• pp.361-371
• /
• 2002

Multifunctionality of agriculture has been an important international issue in terms of environmental benefits and public concerns. We calculated soil loss mass in national basis using the USLE, and attempted to evaluate its economical benefits by replacement cost method. Soil loss mass ranged from 1.4 to $18MT\;ha^{-1}\;yr^{-1}$ was fairly fitted to measured values for 13 cropping systems. In national basis, the factors in USLE were evaluated as: 429.4 for rainfall and runoff factor. R, 0.15 for soil erodibility factor, K, 1.72 for topographic factor, LS, 0.275 for cover and management factor, C, and 0.856 for support practice factor, P. The soil loss estimated from upland farming using the USLE was $26.1MT\;ha^{-1}\;yr^{-1}$, but soil loss from the bare soil was $110.8MT\;ha^{-1}\;yr^{-1}$, the ratio of soil loss from upland farming to bare soil was 23 percents. Function of reducing soil loss in comparison with the bare soil was $84.7MT\;ha^{-1}\;yr^{-1}$, of which national soil loss mass was 62.6 million MT per annum in south Korea. Agriculture economic replacement cost of soil loss reduction was 497 billion Wons(398 million dollars) for the cost of upland soil dressing. For conservational purposes to increase the environmental benefits of upland farming, the agricultural practice including contour, strip cropping, terracing and division ditches should be implemented.