... at the outlet point, the height of which was fixed during the observation period. The water treatment apparatus was set just in front of the weir, and water levels in the paddy field and the ... Paddy field The characteristics of the paddy field and the planting were as follows; 3-m-square lysimeter (Fig. 1a), the inlet point was in the middle, the outlet point was at the corner, surface ... compositions of the microorganisms in the water treatment apparatus for paddy drainage was evaluated. Q-8 content, the highest ubiquinone, had the strongest correlation coefficient between the denitrification...