Since July this year，The field survey and sampling work of the Shaanxi Provincial Soil Census, organized and responsible by the Provincial Soil Census Office, has been carried out in Guanzhong、Comprehensive rollout in northern Shaanxi。This sampling work adheres to the principle of equal emphasis on quality and progress，Enhance front-end control，Provincial experts’ on-site quality control work in order、Synchronized development。Currently，Shaanxi Province has completed on-site quality control of nearly 200 surface sample points。

To improve the accuracy and quality of field survey and sampling data，The Provincial Soil Census Office conducts systematic planning from top-level design，Guaranteed by policy and system、Participating in technical training、Take effective measures in terms of expert team formation and on-site quality control。Passed the establishment of a special work class、Intensified technical training、Improve quality controlStandard and developmentOn-site quality control supervision，ContinuousGuaranteeSurvey samplingQuality control is steadily advanced、Implementation。Guanzhong、The on-site quality control work in northern Shaanxi is carried out in an orderly manner，Further standardized the operating procedures and techniques of the sampling team，Effectively guarantees the development of field surveys and sampling work，Laid a solid foundation for Shaanxi Province to successfully complete the third national soil census。