Study on the Optimal Conjunctive Use of Surface and Underground Water in Jinghui Irrigation Region

By considering the water resources, agriculture and channel system condition of different counties or zones in Jinghui irrigation region, the large system decompositioncoordination model and fuzzy method were applied to study the optimal model of surface and underground water utilization． The irrigation region optimal operation schemes of wet, normal and dry years were computed． In Comparison with the present schemes used in the irrigation regions, the result indicated that the optimal result is practical and feasible .