安徽师范大学项目培育基金2011 xmpy014;安徽师范大学人才项目2013qnzx59;国家自然科学基金41301249资助.Supported by the Cultivation Fund of Anhui Normal University2011xmpy014,the Talented Youth Project of Anhui Normal University2013qnzx59 and the National Natural Science Foundation of China41301249.