CALCULATING AN ET VALUE FOR AN IRRIGATION AREA

摘要

A method of method of calculating an ET value for an irrigation area is d isclosed. The method includes a weather parameter measurement system collect ing at least one weather parameter of a weather parameter area, the at least one weather parameter of the weather parameter area providing a representat ion of weather outside of the irrigation area. An irrigation area weather pa rameter is calculated providing a representation of the weather within the i rrigation area from the at least one weather parameter of the weather parame ter area. The ET value for the irrigation area is calculated from an N-dimen sional continuous function using the at least one irrigation area weather pa rameter, wherein the N-dimensions includes at least a 3-dimensional spatial cube.