国家自然科学基金21663027,51262028,21261021;甘肃省科技支撑项目1504GKCA027;西北师范大学创新团队NWNULKQN-15-2.This work was supported by the National Natural Science Foundation of China21663027,51262028,21261021;the Science and Technology Sup-port Project of Gansu Province1504GKCA027;the Program for the Young Innovative Talents of Longyuan,the Program for Innovative Research TeamNWNULKQN-15-2;the Undergraduate Academic Innovative Research Team of Northwest Normal University