Studies on Method of Water Use Evaluation about Substitute Lot Plan in Reservoirs Irrigation Areas

1.选取可获得农业用水条件评价数据的8个区作为分析区域，从冈山县、广岛县和爱美县各选取6个区作为水库灌区。从广岛县和冈山县分别选取两个区作为河流灌区，每次一个。对于以指挥区为评价单位的灌溉需求条件的评价项目，评价标准和评价主体不明确，评价者的主观因素参与度大，客观评价困难。对于以宗地为单位进行评价的灌渠状况评价项目，可以客观地对灌渠的存在进行清理，还可以掌握设施的结构，从而合理地评价…。更多的人被清除了。这些评价项目对水库灌区和江河灌区都具有共性。荒地、杂地、旱地等没有水权的土地，如果能在评估项目中加入水权，可以在替代地块平面图的土地评估基础上进行处理。一个指挥区受到农地整理和重组的影响。因此，除了交换地块的平衡外，农业用水条件的平衡也是必要的。在农地整理中，各指挥区组成的治水机构是统一的，也是不统一的。在这两种情况下，灌溉渠道状况的评价项目都是有效的。只有在水管理机构统一的情况下，才能适应农业用水条件平衡的理念，并在此基础上处理灌溉需水条件的评估。在现有条件下，由于治水机构成了当事人，替代地块规划的目标区域与指挥区不重合，按照置换地块在土地评估基础上的地块平衡来处理农业用水条件的平衡是不合理的。较少

1. Eight districts where the evaluation data for an agricultural water use condition could be obtained were selected as ones to be analyzed and six districts were selected as reservoirs irrigation areas from Okayama Prefecture, Hiroshima Prefecture and Ehime Prefecture by two while. Two districts were respectively selected as rivers irrigation areas from Hiroshima Prefecture and Okayama Prefecture one at a time.2. With respect to the evaluation items relating to an irrigation requirement condition wherein a unit of evaluation is set to a command area, evaluation standards and the subject of evaluation are unclear and the subjective element of a valuer participates largely and objective evaluation is difficult.3. With respect to the evaluation items of an irrigation canal condition evaluated in a parcel unit, the presence of irrigation canals could be objectively cleared and, in addition, the structure of facilities could be also grasped and, from this, rational items to be evaluated we … More re cleared. These evaluation items are common to both districts of reservoirs irrigation and rivers irrigation.4. Lands having no water rights such as wasteland, miscellaneous land, upland field can be dealed with on the basis of land evaluation in a substitute lot plan if the presence of water rights can be added to the evaluation items.5. A command area is affected by farm land consolidation and reorganized. Therefore, the balancing of agricultural water use condition becomes necessary apart from the balancing of exchange lots. In farm land consolidation, a water control organization formed at every command areas are unified and not unified according to circumstances. In both cases, the evaluation items of the irrigation canal condition is effective. The concept of the balancing of agricultural water use condition should be adapted only when the water control organizations are unified and the evaluation of the irrigation requirement condition should be dealed with therein. In the present condition, it is unreasonable to deal with the balancing of agricultural water use condition according to the balancing of exchange lots based on the land evaluation in the substitute lot plan, because the water control organization becomes the person concerned and the objective area of the substitute lot plan does not coincide with a command area. Less