草地小流域
grassland small catchment
大小地震
large and small earthquake
旱地小麦
wheat of dryland
wheat in dryland
Dry land wheat
dryland winter wheat
Dryland wheat
Dry-land wheat
Wheat in dry land field
wheat
drought area’s winter wheat
旱地小麦品种
dryland wheat varieties
Huang-huai winter wheat region
减小地震灾害
earthquake disaster reduction