国家自然科学基金项目31170423和31270498、国家“十二五”科技支撑计划2011BAC09B05、四川省杰出青年学术与技术带头人培育项目2012JQ0008和2012JQ0059、中国博士后科学基金2012T50782和四川省教育厅青年基金2013SZB0553资助 Supported by the National Natural Science Foundation of China 31170423 and 31270498,the Key Sci-tech Project of the ”12th 5-year-plan” of China 2011BAC09B05,the China Postdoctoral Science Foundation 2012T50782 and the Youth Funds of Sichuan Provincial Deptment of Education