METHOD AND SYSTEM FOR IDENTIFYING EXCELLENT SMALL FLUE-CURED TOBACCO PRODUCTION AREAS ACCORDING TO HIGH-PRECISION DIGITAL SOIL MAP

The present invention discloses a terminal feedback control method for intelligent fine tuning of a slab ballastless track, and particularly relates to the technical field of fine tuning construction of slab ballastless tracks for high-speed rails. The method includes the following steps: S1, placing a second feedback bracket on a track slab, and locating a feedback value point on a centerline of the track slab; S2, placing four first feedback brackets at four corners of the second feedback bracket respectively, and using a base to fix the first feedback brackets on a fine tuning frame; S3, moving a fine tuning truss to a designated position; moving a corresponding sliding support to align the elevation sensor with the central target of the first feedback plane, align the lateral sensor with the central target of the second feedback plane, and align the vertical sensor with the central target of the third feedback plane; and S4,using a total station and a supporting fine tuning system to complete the fine tuning operation of the track slab. The present invention is capable to reduce working procedures, avoid repetitive alignment and inspection by operators, reduce personnel investment and an error rate of placement, improve efficiency and precision of fine tuning operations, and shorten the time of fine tuning operations.