“grassland agriculture”簡單造句，grassland agriculture造句子

1、grassland agriculture

3、According to the research accomplishment in the hilly area of south Ningxia in resent20 years, the authors put forward the major way for farming and graziery developing healthily only when grassland agriculture possessing the basic function of contending with the unstability of district ecology.

2、The production models and countermeasures of grassland agriculture of in hilly area of Fujian