当前,中小型水库分布面广,数量众多,计算工算量大,及时掌握一个区域全部水库的抗旱能力,做到事前心中有数,寻求一种简易的速算法是急需的。中小型水库区域抗旱能力预报就是依据一个县、一个地区或一个中小流域的地形条件、气候因素、水文地质特征、工程系统状况以及灌区作物组成、耗水规律、灌水方法、管理水平等的类似性进行分析,编制成通用预报查算图。 At present, small and medium-sized reservoirs are widely distributed, large in number, large in computational effort, and capable of mastering the drought resistance capability of all reservoirs in a region in time. Therefore, it is urgently needed to find a simple speed algorithm. The prediction of drought resistance capability of small and medium-sized reservoirs is based on the topographical conditions, climatic factors, hydrogeological features, status of engineering systems, crop composition, water consumption laws, irrigation methods and management level in a county, a region or a small and medium-sized river basin Analysis, compiled into a common forecast chart.