pasturen.牧场；草原vi.吃草vt.放牧Pastureiand rehabilitation草地退化pastureland rehabilitation退牧还草pasture-livestock industry草地畜牧业Pasturella multocida bacterin多杀巴斯德(氏)菌(死)菌苗pasture ecological livestock capability草地生态载畜量Pasturella haemolytica-multocida bacterin二联巴斯德(氏)菌(死)菌苗