Inventory Theory Application to the Optimum Control of Irrigation Water.

摘要

The study was centered mainly in the use of inventory models to find an optimal solution to the problem of what soil water level to maintain in order to obtain the maximum profit from an irrigated crop. The models developed take account of the stochastic nature of the evaporative demand and its dependence on rainfall during the growing period,and the more realistic situation in which the lag time in delivering water to the soil is positive can be included. Moreover,multi-product inventory models can be used to simulate the storage of water,fertilizer,and salts simultaneously. The requirements for the use of these models for the management of irrigation systems are the availability of data on the evaporative demand of a crop,short-term forecasts on rainfall probabilities,and that the farmer keeps track of the water level in the soil reservoir.