A Comprehensive Evaluation Method Based on Catastrophe Theory for Drip Irrigation under Mulch Mode
Su Chao · Jieshui guan'gai · 2010
Based on the revolutionary theory,this paper uses initial fuzzy membership function and mutation series,combines the revolutionary theory and fuzzy analysis to resolve the multiple layers target of the drip Irrigation Mode under Mulch,and then the ultimate catastrophe function value can be obtained through quantitative calculation by using the normalization formula.The evaluation of various mode of drip Irrigation under Mulch can be determined by transferring the ultimate catastrophe function.The model is applied to cotton fields in Xinjiang and nine irrigation modes are evaluated.Compared with the traditional evaluation method,the method of this paper can avoid the errors due to subjective causes,its evaluation results is objective and accurate,the process is simple,and provides a new way for the evaluation of water-saving irrigation.