This standard stipulates the basis for the classification of medium- and low-yield soil types and the quality requirements for transformation; this standard is applicable to the classification of land and soil types of medium- and low-yield fields and the early stage demonstration, planning and design, engineering and supporting measures of quality, results review (appraisal) and acceptance of transformation projects.
DB50/T 34-2001 history
2001DB50/T 34-2001 Classification of medium and low-yielding field soil types and improvement quality standards