The Rainfall' s Simulation Analysis at Crop Growth Period in Gansu Hexi Oasis Irrigation District
An appropriate simulation model established in this article by uses the crop growth period rainfall of observational data of Zhangye district during 1981 - 1990. Specific research approach is the use of five point three smoothing method to process the original data and reuse of Gaussian function simulation analysis the rainfall in the crop growth period at this district Inspected the simulation a-nalysis results and variance analysis, we use smoothing methods to transform the original data .because the random errors of original data were eliminated and improve the quality of the data, thus make the accuracy of simulation results has been further improved, and can established an accurate decision support system for irrigation and rational development and effective use of water resources.
Simulation the rainfallData smoothingGaussian functionPrecise irrigation