... microorganisms depend on the kinds of microorganisms in there. Therefore, information on the microorganism community structure or an alternate indicator is very important for understanding the microbial ... 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 soil ... the inundation began on June 8 in 2007. A weir was 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...