1 Scope
This standard specifies the sample requirements, specimen preparation and test methods for microbial fertilizers.
This standard is applicable to the quality inspection of microbial fertilizers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 19524.1 Determination of fecal coliforms in fertilizers
GB/T 19524.2 Determination of mortality of ascarid egg in fertilizers
NY 525 Organic fertilizer
NY/T 1113 Terms of microbial fertilizer
NY/T 1736 Technical specification of strain identification for microbial fertilizers
NY/T 1978 Fertilizers - Determination of mercury, arsenic, cadmium, lead and chromium content
NY/T 2066 Differentiation for strain of microbial fertilizer production by PCR method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in NY/T 1113 and the following apply.
3.1
microbial fertilizer
product containing specific living microorganisms, which is used in agricultural production to increase the supply of plant nutrients or promote plant growth through the life activities of microorganisms contained, so as to increase yield, and improve the quality of agricultural products and agro-ecological environment. The microbial fertilizer contains microbial inoculant in agriculture (i.e., microbial inoculant), composite microbial fertilizer, and microbial organic fertilizer
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Sample requirements and specimen preparation
5 Test methods
Annex A (Normative) 5-tube MPN method
Annex B (Normative) Common test culture media
Annex C (Normative) Determination of potassium content in microbial fertilizers - Atomic absorption spectrophotometric method
Annex D (Informative) Determination procedure for the number of fecal coliforms and the retrieval table for the most probable number (MPN)
Annex E (Normative) Determination of enzyme activity of organic material decomposing agent products
