기후변화 대응 중북부지역 적응 소득형 작부모형 및 품종 선정

• Published in: Korean journal of crop science Vol. 69; no. 4; pp. 407 - 420
• Main Authors: 박명렬, Myoung Ryoul Park, 김정주, Jeongju Kim, 한아름, Areum Han, 이채원, Chaewon Lee, 전원태, Weon-tai Jeon
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 31.12.2024
• Subjects: central-northern region; climate change; cropping system; profitable; 농학; profitable; central-northern region; cropping system; climate change
• ISSN: 0252-9777; 2287-8432
• DOI: 10.7740/kjcs.2024.69.4.407

This study was conducted to develop a profitable cropping system and suitable cultivars adapted to the central-northern region of South Korea. To establish a cropping system composed of a specific set of food crops, three types of cropping systems, including cropping system I comprising potato-sorghum, cropping system II comprising maize-sesame, and cropping system III comprising sesame-sesame, were evaluated in Yeoncheon in the central-northern region of Korea from 2020 to 2021. The crop productivity and income of the cropping systems were analyzed to select a profitable cropping system, and the profitable cropping system and its cultivar set were verified in the field. Cropping System I was more profitable than were the other systems, regardless of the order of sowing (transplantation). The net income according to the order of sowing (transplanting) of cropping system I was as follows: the 1st (potato 3.20 and sorghum 6.30) was 3,620,000 won per 10a; the 2nd (potato 3.30 and sorghum 7.10) was 2,560,000 won per 10a; the 3rd (potato 4.10 and sorghum 7.20) was 2,193,000 won per 10a. However, in terms of net income, the 1st sowing order of cropping system I was selected as the most profitable cropping system in the central-northern region. To identify a cultivar set for the selected profitable system, three cultivars of each crop were evaluated over three years (2022-2024). In terms of growth characteristics and productivity, Jopung and Haichal were selected as suitable cultivars for the selected cropping system. The selected system and cultivars grown in a farm field during a two year period (2023-2024) were stably profitable at over 9.6-fold higher than that of soybeans produced from single cropping. Taken together, the results of this study confirmed that the potato-sorghum cropping system contributes to increased productivity and farmer income in the central-northern region of South Korea.