Abstract
A comparative analysis of farm incomes was performed from the new composition system of crops, such as feed crops, including soybeans, Italian ryegrass, soybean-potatoes, and soybean-barley planted in rice fields. Through this analysis, the suggested implications were derived, and the technological solutions were determined. The profitability of the composition of soybean-Italian ryegrass showed that the soybeans yield was 325kg/10a, and the sale price was ￦3,962/kg, leading to a gross revenue of ￦1,288,000/10a. The yield of Italian ryegrass was 1,584kg/10a with a sale price of ￦125/kg, showing a gross revenue of ￦198,000/10a. The net income of soybeans was ￦284,000/10a, which means a net income rate of 22.1%, whereas the net income of Italian ryegrass was -￦30,000/10a. The composition of soybeans-potatoes and soybeans-barley showed a gross revenue of ￦930,000/10a and ￦375,000/10a, respectively. The crop composition types have been developed for the Income Type, Production Type of Forage, Improvement Type of Food Self-Sufficiency, and Corresponding Type to Climate Change. On the other hand, regional types have not been developed sufficiently. In addition, various selections of alternative crops and the establishment of crop composition congruent to the specific regions should be developed systematically in terms of the production technology. Therefore, it is necessary to develop the technological establishment of the crop composition through continuous related studies with the mid-to-long term objectives of land utilization and grain self-sufficiency rates.
본 연구는 논에 타 작물(사료작물)인 콩과 이탈리안 라이그라스, 콩과 감자, 콩과 보리의 작부체계를 신규 도입한 농가를 비교 분석하여 시사점을 도출하고, 기술적 해결사항 등을 파악하였다. 콩 및 이탈리안 라이그라스(IRG) 논 작부체계 수익성으로는 콩의 10a당 수량은 325kg이고, kg당 판매단가는 3,962원으로 총수입은 1,288천원이었다. IRG의 10a당 수량은 1,584kg이고, kg당 판매단가는 125원으로 총수입은 198천원이었다. 콩 10a당 소득은 284천원으로 소득률은 22.1%였다. IRG 10a당 소득은 ▽30천원이었다. 콩과 감자, 콩과 보리의 10a당 총수입은 각각 930,000원, 375,000이었다. 작부체계의 유형으로는 소득형 작부체계, 조사료의 생산형, 식량자급률 제고형, 기후변화 대응형, 등 다양한 작부체계 유형이 개발되고 있으나 권역별로 다양한 작부체계 모형은 부족한 상태이며, 대체작목 선정과 지역에 맞는 유형별 작부체계의 재배기술을 더 체계적으로 확립하여야 한다. 경지 이용률과 곡물자급률 등 중장기 목표를 가지고 끊임없는 관련 연구를 통한 작부체계의 기술적 확립이 필요한 시점이라고 할 수 있다.