With the continuous foison of food supplies in recent years , the gross balance of foodstuff in our country has been realized . at the same time , the impertinency of agricultural structure , especially the structural contradiction in planting production , has been becoming increasingly protrudent 随着近年来粮食生产的连续丰收,我国粮食已实现总量平衡,与此同时,农业结构不合理,尤其是种植业生产的结构性矛盾日益突出。