Lawn protecting method adaptive to climatic change in high frigid grassland regions

The invention discloses a lawn protecting method adaptive to climatic change in high frigid grassland regions, and relates to a technology of ecological restoration and high frigid grassland climatic change adaptation. The method comprises the following steps of: dividing a grazing grassland into three parts according to the grassland utilization mode, namely a warm season grazing region, a drop spraying irrigation region and a low shed drop irrigation region; performing fencing and rotational grazing on the three parts respectively; irrigating the grassland by using rive and lake water and warm season rainfall and combining a water-saving irrigation technology; performing reseeding, harvesting and storage or shed opening and rotational grazing on the grass of the drop spraying irrigationregion and the low shed drop irrigation region according to the climatic conditions; and determining the irrigation quantity according to the local climatic change condition, namely the difference between the rainfall precipi