Regional Characteristics of Upland Irrigation in Kinki District (II) : Case studies of water requirement influenced by the different watering per irrigation in the Southern Osaka Prefecture

摘要

This study was carried out to clarify the fact how net water requirement is influenced by the different watering per irrigation in the Southern Osaka Prefecture. The different waterings per irrigation were classified to the daily irrigation method (DIM), the intermittent irrigation method (IIM), and the full layer irrigation method (FLIM). That is, study was conducted by applying the simulations of water balance calculations. Consequently, it is found that the amount of water requirement under the application of the daily irrigation method is the least of others, and effective rainfall the largest. Therefore, the daily irrigation method is judged to be the best irrigation method in humid zone.