国家自然科学基金31460021;国家“十二五”重大科技支撑项目2011BAC13B04;江西省自然科学基金20142BAB214008,20151BAB204003,20151BA204002Supported by the National Natural Science Foundation of China 31460021,by the Key Projects in the National Science and Technology Pillar Program during the Twelfth Five-year Plan Period 2011BAC 13B04 and by the Natural Science Foundation of Jiangxi Province 20142BAB214008,20151BAB204003,20151BAB204002