the National Natural Science Foundation of China30960338;the Xinjiang Production and Construction Corps Foundation.2011BB019 & 2011BA058;the Shihezi University Foundation.RCZX200925 & LHJJ2010B10;国家自然科学基金30960338;兵团博士基金2011BB019;兵团重点领域科技攻关2011BA058;石河子大学RCZX200925,LHJJ2010B10