Eco-agriculture is ecologically self-sustaining, low investment and economically viable, ethics and beauty acceptable small-scale agriculture. Eco-agriculture when compared with conventional farming are more diversified and transformable in irrigation methods to fit local conditions. For example, the alternate wetting and drying irrigation (AWD) can be used so that the field is not always with standing water, provide a variety of living conditions for insects, amphibians inhabit environment, while saving considerable amount of water. Whereas conventional farming mainly by continuous flooding irrigation, which is by controlling the paddy field inlet and outlet gate opening height to maintain a certain surface water depth in the paddy field, inhibit weed growth and maintain crop growth temperature, usually more labor-saving in irrigation management. However, in the increasing shortage of water resources and ecological agriculture growing more attention, ecoagriculture and irrigation methods in different crop water requirement need more discussion and investigation.