基金Supported by National High-Tech Research and Development Program of China(863 Program)(2010AA101402)Postdoctoral Fund of China(20110490124)+2 种基金High-Tech Key Laboratory of Agricultrual Equipment&Intelligentization of Jiangsu ProvinceA Project Funded by the PriorityAcademic Program Development of Jiangsu Higher Education Institutions and Scientific Research Project of Jiangsu University(10JDG083)