Abstract
This study aims to present a model of regional study in the education of social studies at elementary or junior high school in using the relationship between microtopography, groundwater level and agricultural land use on the lower reaches of the Yahagi River which is draining into the Bay of Ise. At first the characteristics of agriculture engaged on the bay head area and it's neighborhood of alluvial plain were made clear for tarring out this purpose, that is, size and kinds of root crops were investigated.
Next, the height of ground water level was measured in using the boring stick along the lower basin of the Yahagi River.
Consequently it is found that a size of root crops cultivated in this area is limited because the crops are keeping with interval more than 30cm on groundwater level. Therefore, where groundwater level such as paddy fields of bay head area are very shallow, many paddy fields are reconstructed to vegetables field by banked soil brought from another areas.
Because urban population in Japan have been increasing rapidly during the last several decades with the industry development, demand of vegetables in urban areas have been also increasing enormously, Such agricultural phenomenon in this study area are a typical type of agriculture that have appeared to make an more advantage than rice agriculture.
