T/GVEAIA 031.2-2026 Rare Earth Intervention in Agricultural Product Production Regulation Part 2: Technical Requirements

Scope

This document specifies the general technical requirements for the regulation of rare earth intervention in agricultural product production, the norms for the use of rare earth elements, process parameters, product quality, and safety limits. This document applies to rare earth intervention production activities implemented under facility agriculture, open-field cultivation, and soilless cultivation conditions, using methods such as vapor deposition, foliar spraying, and soil conditioning. This document provides a technical benchmark for T/GVEAIA 031.3 (process), 031.4 (equipment), and 031.5 (inspection), and serves as the basis for product quality grading in the T/GVEAIA 038 (specific agricultural product categories) standard. 4. General Technical Requirements 4.1 Production Environment Requirements 4.1.1 Soil Environment The farmland soil shall comply with the screening values for soil pollution risk in agricultural land specified in GB 15618, and the background values of rare earth elements (calculated as Ce, La, Nd) shall meet the following requirements: - Light rare earth area (Ce + La + Nd > 200 mg/kg): Reduce the MPD by 30%; - Medium rare earth area (100-200 mg/kg): Implement at the standard dosage; - Low rare earth area (<100 mg/kg): Increase the MPD by 20%, but not exceed the absolute upper limit. 4.1.2 Irrigation Water Quality The irrigation water used in farmland shall comply with the requirements of GB 5084, and the total amount of rare earth elements in the water (calculated as oxides) shall be ≤0.05 mg/L. 4.1.3 Air Quality When using the vapor deposition process in facility agriculture, the concentration of rare earth dust in the operating environment (time-weighted average allowable concentration, TWA) shall be ≤1.0 mg/m3, and the instantaneous concentration shall be ≤3.0 mg/m3. It shall comply with the technical requirements of T/BYXT 192. 4.2 Input Requirements 4.2.1 Rare Earth Compound Raw Materials Rare earth comp

Development Information

Same series standard

Related Standards