September 4，Shaanxi Provincial Department of Science and Technology Organization Appraisal Committee，To Shaanxi Real Estate Development Services Corporation、Identification of the scientific and technological achievements of the "Research on the core technology of arsenic sandstone and sand composite soil formation in Mu Us Sandy Land" jointly conducted by the Institute of Geographical Sciences and Natural Resources of the Chinese Academy of Sciences and Xi'an University of Technology over a three-year period。The appraisal committee believes，Project has achieved rich results，Sufficient arguments，Advanced technology，Original and important promotion value，Reaching the international leading level of similar research。

The appraisal committee is composed of Professor Suo Lisheng, deputy chairman of the Agriculture and Rural Affairs Committee of the National People’s Congress、Academician Liu Changming of the Chinese Academy of Sciences、Academician Sun Jiulin of the Chinese Academy of Engineering and Resources and Environment、Water Conservancy、Soil、Dryland Agriculture、Land Survey、Composed of experts in agricultural engineering and other fields。Appraisal，The project focuses on land development and improvement，The first discovery of the complementarity of the two material structures of arsenic sandstone and sand in soil formation，Through experimental research and practice，Proposed a combination formula suitable for the growth needs of different crops，Created an efficient utilization model of water and soil dafabet logincoupling in ecologically fragile areas，Integrate and condense the formula technology of arsenic sandstone and sand to form soil、Field configuration technology、Planning and Design Technology、Large-scale rapid land reclamation technology and water-saving and efficient technology，Formed a complete technical system，Successfully realized the resource utilization of sandy land，Achieved significant economy、Social and ecological benefits。

Mu Us Sandy Land，Total area 7.84 million hectares，Arsenic sandstone and sand are both called the "two pests" of the area，As soon as the arsenic sandstone is exposed, it will weather，Wind-raised dust，Loose in rain，Loss of water，Called “environmental cancer”；Sand will leak water and fertilizer，Cannot form agglomerate structure。Two substances are the “culprits” leading to the ecological degradation of land resources。

As understood，Dajihan Village, Yulin City, Shaanxi Province, uses this technological achievement to develop and renovate land，The average yield of potatoes planted for the first time will reach more than 3,000 kilograms，It is twice the output of the village’s original good farmland。This result has been extended to the 23,000-acre land reclamation project in Mengjiawan Village, Mengjiawan Township，Thousands of acres of which have been planted，Happy harvest this autumn。