1. Admission and Employment Office, Tangshan Normal University, Tangshan 063000, China
2. School of Mathematics and Computational Science, Tangshan Normal University, Tangshan 063000, China
3. Tangshan Key Laboratory of Agricultural Pathogenic Fungi and Toxins, Tangshan Normal University, Tangshan 063000,, China
4. College of Physics Science and Technology, Tangshan Normal University, Tangshan 063000, China