农田灌溉需水与供水系统的研究

Research on System of Model that Crops Need for Water to Irrigate and the Allocation Water

结合位山引黄灌区的实际,建立了农田需水模型及引用黄河水供水系统。在雨水丰沛情况下,农作物不需要灌溉;雨水亏缺情况下,灌溉供水顺序一是地下水,二是当地地表水,三是引用外来水。通过农田灌溉需水模型、水文测报系统与研制的供水系统有效结合,为位山引黄灌区的农作物提供了持续、稳定的长效机制,奠定了农业生产发展的稳固基础。

In terms of Weishan irrigation district actuality, it is established that system of model that crops need for water to irrigate, the hydrology measure and report and the allocation water. System of the hydrology measure and report is consisted of system of surface water measure and report, system of ground- water measure and report, system of rain situation measure and report, system of soil moisture content measure and report. Message of crops to need for water come by in time feedback and synthesis analysis of system of the hydrology measure and report. Crops not need for water to irrigate in precipitation plenty condition, but in precipitation be short of condition first is groundwater, second is local surface water, third is cite the Yellow river water for order of irrigation allocation Water. Through combination of system of model that crops need for water to irrigate, the hydrology measure and report and the allocation water in Weishan irrigation district, crops is obtained water in good time and proper quantity and is undertaken with high, stable yields.