GB/T 23348-2009Slow release fertilizer (English PDF)

1 Scope

This standard specifies the slow-release fertilizer requirements, test methods, inspection rules, marking, packaging, transportation and storage.

This standard applies to nitrogen fertilizer, potash fertilizer, compound fertilizer, blended fertilizers (BB fertilizer) and other products of all or part of the particle by particle plus a specific process

Workers from the slow-release fertilizer.

This standard does not apply to sulfur coated urea (referred SCU) coated inorganic fertilizer, urea formaldehyde slow release fertilizer does not apply, does not apply to

The use of nitrification inhibitors, urease inhibitors delay the technical stability of fertilizer nutrient forms of transformation. Existing national or industry standards of slow-release fertilizer

Such as sulfur-coated urea, perform the appropriate product standards.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 8170 repair value expressed about the rules and limit values and judgment

GB/T 6679-2003 General rules for sampling solid chemical products

GB 8569 solid chemical fertilizers Packaging

GB/T 8572 Total nitrogen in compound after distillation titration

GB 9969.1 Instructions General Industrial Products

GB 15063 compound fertilizers (compound fertilizer)

GB/T 17767.3-1999 Organic - inorganic compound fertilizer by the total content of potassium

GB 18382 fertilizer identify the content and requirements

GB 21633 blended fertilizers (BB fertilizer)

GB/T 22923 fertilizer automatic analyzer determination of nitrogen, phosphorus and potassium

HG/T 2843 fertilizer products chemical analysis commonly used in standard titration solution, standard solution, reagent solution and indicator solution

3 Terms and Definitions

The following terms and definitions apply to this standard.