From the three generations of sand control personnel at Babusha Forest Farm in Gulang County, Wuwei City, to the Haloxylon ammodendron forest in "Laohukou", Minqin County, Wuwei City; From the green waves of reeds swaying in Qingtu Lake to the "blue ocean" of photovoltaic sand control... Walking in the sand prevention and control points of the Hexi Corridor in Gansu, the most visible thing is "green entry and sand retreat", and the most heard thing is "long-term achievements". Today's Hexi Corridor, with trees deep in the sand and green paving toward the sky, Minqin County's desertification control project has prevented Badain Jaran Desert from connecting with Tengger Desert. In the past 10 years, Gansu has completed a total of over 21 million mu of comprehensive desertification land management. The results of the sixth national desertification and desertification survey show that the desertification and desertification land in Gansu have decreased by 2627 square kilometers and 1045 square kilometers, respectively, and the degree of desertification and desertification is continuously decreasing. Gansu's desertification control personnel, who never bow their heads in the face of difficulties and dare to turn deserts into oases, continue to put in more effort in building the "Green Great Wall". Scientifically control desertification, adjust measures to local conditions, update technology, and drive along the southern edge of Tengger Desert to the border between Gansu and Inner Mongolia. Grass squares are everywhere within sight. Let's go up and take a look! "Ji Yuyou, the director of the Forest and Grass Bureau in Gulang County, Wuwei City, opened the car door and walked straight towards the high altitude of the sand dune. The reporter followed with deep and shallow feet. It's not easy to leave, is it? Step on it and see what's different about the sand here. "Pointing to the sand inside the grass grid, Ji Yu started selling. Is it creaking? "Ji Yu explained, setting up grass squares can effectively resist wind and increase the moisture content of the sand layer. The wind is small, the water is strong, and the surface is crusty. Stepping on it will make a sound, making it less prone to dust. Standing on the sand dune, looking up from afar, the 1.5 meter square sand grid is neatly laid to about 2/3 of the windward slope top. This can play a role in blocking the front and pulling back, reducing sand dune flow, and reducing the height of sand dunes, "said Ji Yuyou, who said that grass squares are widely used in the sand areas of the Hexi Corridor. Sand fixation is very important, and greenery is even more crucial, "Ji Yuyou said. Planting trees in the desert is ineffective if they are too sparse, and difficult to survive if they are too dense. According to the calculation of precipitation, it is more suitable to plant one seedling per sandbox. After continuous sand fixation and greenery, Gulang County will complete desert control next year. "Chen Zhaozhong, a villager from Heda Village, Xuebai Town, demonstrated the use of a handheld sand barrier machine in the Shazuidun Mechanical Sand Compaction Demonstration Zone in Minqin County. I saw the machine moving at a constant speed, the pressure plate constantly rising and falling, and the "lying flat" straw instantly "stood up", forming a windproof sand barrier. "Previously, it was manual labor, but now it is mechanical, saving time and effort, and achieving better results. Mechanical landfill of rice straw can reach a depth of over 15 centimeters, improving engineering quality while also increasing efficiency by about four times. "Ji Yongfu, Deputy Director of Gansu Provincial Institute of Sand Control, introduced that the research and development team took four years