应用突变理论综合评价膜下滴灌模式

A Comprehensive Evaluation Method Based on Catastrophe Theory for Drip Irrigation under Mulch Mode

基于突变理论,利用初始模糊隶属函数和突变级数,将突变理论与模糊分析结合起来,对膜下滴灌灌溉模式进行多层目标分解,根据归一公式进行计算,得出灌溉模式的总突变级数值,实现了对膜下滴灌多种灌溉模式的评价。将该模型应用于新疆的棉田试验中,对9种灌溉模式进行了评价。与传统评判方法相比,避免了由于主观原因造成的误差,评价结果客观准确、方法简单,为节水灌溉评价提供了新途径。

Based on the revolutionary theory, this paper uses initial fuzzy membership function and mutation series, combines the rev- olutionary theory and fuzzy analysis to resolve the multiple layers target of the drip Irrigation Mode under Mulch, and then the ulti- mate 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 ap- plied to cotton fields in Xinjiang and nine irrigation modes are evaluated. Compared with the traditional evaluation method, the meth- od 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.