Gansu desert needs straw. Because according to the relevant standards, one mu of sand needs to press 800 kilograms of straw, that is, 40 thousand mu of desert needs to press more than 30 thousand tons of straw. In order to strictly implement the prevention and control of desertification, it is necessary to adopt the mode of seedling raising in Gaza with grass and sand barriers. Each grass sand barrier is a square with the specification of 1.5m times1.5m. In the next spring, Haloxylon ammodendron, Calligonum mongolicum and other sand seedlings should be planted in these squares, and planted according to the font to keep moisture.