Fourthly,efforts are being intensified to prevent or control hazards caused by mice,insects and poisonous weeds,and to maintain the natural ecological balance of the grassland by utilizing scientific means,and artificial and biological technologies.

• 四是，运用科学手段，采取人工和生物等技术，加大对鼠害、虫害、毒草的预防和治理，维护草地的自然生态平衡;