GB/T17420-2020 Trace element foliar fertilizers This standard specifies the technical requirements for trace element foliar fertilizers, sampling, test methods, inspection rules, identification and quality certificates, packaging, transportation and storage. This standard applies to foliar fertilizers mainly composed of trace elements.
GB/T 17420-2020 Referenced Document
GB 18382 Fertilizer marking—Presentation and declaration*, 2021-04-30 Update
GB 38400 Limitation requirements of toxic and harmful substance in fertilizers