Hao, Jianjun
Li, Jianchang
Yang, Shuhua
Zhao, Jianguo
Ma, Yuejin
Funding for this research was provided by:
the Natural Science Foundation of Hebei Province for Distinguished Young Scientists (E2011204036)
the Natural Science Foundation of Hebei Province (E2007000566)
the Technology Foundation of Hebei Agricultural University (LG20120103)