Abstract
This study was conducted to evaluate the effect of plant number per hill (PNH) on growth and yield of foxtail millet in drained paddy fields. Crop growth, development, and yield in the field were examined for 2 years to assess the efficiency of proposed cropping system. The greatest culm length of 138 and 148 cm in the first and the second year, respectively, at the harvest stage was observed in plots with one plant per hill. The greatest culm diameter of 7.79 and 7.67 mm in the first and second year, respectively, was measured in plots with one plant per hill. The greatest tiller number of foxtail millet in plots with one plant per hill was 2.9 and 2.7 in the first and the second year, respectively. However, there was no significant difference between plots with four and five plant per hill. Among the measured yield components, the spike length and seed number per spike were one plant per hill in both years. The highest grain yield of foxtail millet ($324kg{\cdot}10a^{-1}$ and $333kg{\cdot}10a^{-1}$ in the first and second year, respectively) was obtained from plots with two plants por hill, followed by plots one, three, four, and five plants per hill.
최근 건강 기능성 농산물로 각광받고 있는 조의 생산량과 자급률 향상을 위하여 조 고휴점파 시 재식본수에 따른 생육 및 수량특성을 검토한 결과, 간장은 1, 2년차 모두 1본 처리구에서 138, 148 cm로, 가장 짧았던 5본 처리구에 비해 각각 31, 25 cm 차이를 보였으며, 재식본수가 적을수록 길어지는 경향이 뚜렷하였다. 간경은 1본 처리구에서 7.79, 7.67 mm로 굵었으며, 재식본수가 증가할수록 얇아지는 경향을 보였다. 분얼수는 1본 처리구에서 1, 2년차 모두 2.9, 2.7개로 가장 많았고, 재식본수가 증가할수록 감소하였으며 4, 5본 처리구에서는 변화가 없었다. 수량구성요소에서 이삭장과 이삭당 종실수는 연차간 재식본수가 적을수록 길고 많았으며, 그 결과 10a당 수량은 2본 처리구에서 이삭당 종실중과 천립중이 가장 높았던 1본 처리구에 비해 1년차에 12%, 2년차에 9% 높게 나타났다.
