Supported by the Agriculture Science Technology Achievement Transformation Fund 2012GB2A100021,by the Major Projects in Science and Technology Support Program of Tianjin of China 11ZCKFNC00500 and by the Tianjin Transformation Fund for Agricultural Science and Technology Achievements 201202160;国家农业科技成果转化项目2012GB2A100021;天津市科技支撑计划重点项目11ZCKFNC00500;天津市农业科技成果转化与推广项目201202160