논문 상세보기
pp.551-557
남부지방의 논 무경운체계에서 직파재배시 벼 품종들의 생육 특성의 차이를 구명하기 위하여 1992년부터 무경운 상태로 관리된 논에서 직파재배를 하여 입모 상태, 중간 생육, 도복관련 형질, 수량구성요소와 수량의 변화를 경운답 재배와 비교한 결과를 요약하면 다음과 같다. 1. 입모율은 무경운재배가 경운재배보다 낮았고, 논 무경운 체계에서 입모율이 높은 품종은 조령벼, 동진벼, 대야벼, Calpearl 등이었으며, 초기 생육은 논 무경운 체계에서 저조하였다. 2. 초장과 경수는 무경운재배가 경운재배보다 생육이 떨어졌으나, 등숙률은 무경운재배에서 높았다. 3. 논 무경운체계에서 도복관련 형질이 양호한 품종은 화성벼, 화영벼, 조령벼, Calose, Ca1ose 76이 었다. 4. 무경운 체계에서 입모율과 생육의 경시적 변화 및 수수를 고려하면 파종량을 경운재배보다 늘려야 될 것으로 판단되었다.
In order to establish a labour-saved and environment friendly paddy rice system in southern Korea, no-tillage paddy system was proposed and investigated from 1992 to 1993. Basically this system includes a complete return of crop residules into the soil, and zero-tillage. In an effort to minimize labour requirement in rice farming, several cultivars were directly sown and grown under the system and the characteristics of the growth and yield potential of the cultivars were compared with those grown in an ordinary paddy soil. Joryeongbyeo, Dongjinbyeo, Daeyabyeo and Calose rices showed high level of seedling establishment in the no-tillage padddy system. However, the value was significantly lower than in those of the cultivars direct-sown in an ordinary tillage paddy condition. The rice direct-sown and grown under the no-tillage paddy system showed significantly decreased number of tillers per square meter and plant height, but increased ripened grains. The lodging-related characteristics of rice plant, such as band breaking weight, the length of top 3rd ∼4th internodes, the height of weight center, and lodging index, were observed positive aspects in cultivars such as Hwasungbyeo, Hwayongbyeo, Joryeongbyeo, Calose and Calose 76 and being considered adaptable to direct-sown under the no-tillage paddy system.
