인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
Background: This study evaluated the kinematic characteristics and field performance of a chain-clamp-type transplanter designed for bare-root Rehmannia glutinosa seedlings.
Methods and Results: A kinematic model was developed to analyze planting trajectory, velocity synchronization, and soil disturbance associated with the combined chain motion and forward travel of the transplanter. Field tests were conducted at a forward speed of 1.6 ㎞ h<sup>-1</sup>, transplanting rate of 72 seedlings min<sup>-1</sup>, and target planting depth of 40 ㎜. Under the selected kinematic condition (λ = 1.068), horizontal dragging near the planting position was reduced. The longitudinal and transverse dimensions of the soil opening ranged from 99.20 to 120.40 ㎜ and 31.67 to 36.53 ㎜, respectively. Compared with that in the conventional reference mechanism, the transverse opening width was reduced by 41.4% to 49.3%, yielding a soil disturbance area of 2430 ± 170 ㎜² per planting position. The missed-planting and seedling damage rates were 1% and 2%, respectively, whereas stable planting posture and relatively uniform depth were maintained.
Conclusions: The chain-clamp-type mechanism is suitable for mechanized transplanting of delicate bare-root medicinal crop seedlings. However, manual seedling feeding remained the primary limitation restricting further improvements in operational capacity.
Methods and Results: A kinematic model was developed to analyze planting trajectory, velocity synchronization, and soil disturbance associated with the combined chain motion and forward travel of the transplanter. Field tests were conducted at a forward speed of 1.6 ㎞ h<sup>-1</sup>, transplanting rate of 72 seedlings min<sup>-1</sup>, and target planting depth of 40 ㎜. Under the selected kinematic condition (λ = 1.068), horizontal dragging near the planting position was reduced. The longitudinal and transverse dimensions of the soil opening ranged from 99.20 to 120.40 ㎜ and 31.67 to 36.53 ㎜, respectively. Compared with that in the conventional reference mechanism, the transverse opening width was reduced by 41.4% to 49.3%, yielding a soil disturbance area of 2430 ± 170 ㎜² per planting position. The missed-planting and seedling damage rates were 1% and 2%, respectively, whereas stable planting posture and relatively uniform depth were maintained.
Conclusions: The chain-clamp-type mechanism is suitable for mechanized transplanting of delicate bare-root medicinal crop seedlings. However, manual seedling feeding remained the primary limitation restricting further improvements in operational capacity.
본문·목차
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