NY/T 798-2015 Compound microbial fertilizer NY/T798-2015 Standard compression package decompression password: www.bzxz.net
This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of compound microbial fertilizers. This standard applies to compound microbial fertilizers.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces NY/T 798-2004 "Compound Microbial Fertilizers". Compared with NY/T 798-2004, in addition to editorial changes, the main technical changes are as follows:
——Modified the mass fraction requirements of total nutrients;
——Modified the pH range requirements;
——Modified the limit index requirements of arsenic (As), cadmium (Dd), lead (Pb), chromium (Cr), and mercury (Hg) in products;
——Modified the judgment rules;
——Added the limit requirements of each single nutrient in the total nutrients;
——Added the technical index requirements of organic matter;
——Deleted the technical index requirements of fineness;
——Standardized the referenced documents such as product testing methods.
This standard is proposed and managed by the Crop Management Department of the Ministry of Agriculture.
The drafting units of this standard are: Microbial Fertilizer and Edible Fungi Quality Supervision and Inspection Center of the Ministry of Agriculture, Microbial Product Quality Safety Risk Assessment Laboratory of the Ministry of Agriculture (Beijing), and Institute of Agricultural Resources and Agricultural Regions of the Chinese Academy of Agricultural Sciences.
The main drafters of this standard are: Jiang Xin, Li Jun, Ma Mingchao, Shen Delong, Guan Dawei, Cao Fengming, Li Li, Chen Huijun, Yang Xiaohong, and Wang Zhanhua.
The previous versions of this standard are:
——NY/T 798-2004.
The following documents are indispensable for the application of this document. For all dated references, only the version with the date is applicable to this document. For all undated references, the latest version (including all amendments) is applicable to this document.
GB/T 8170 Rules for rounding off values ​​and expression and determination of limit values
GB/T 19524.1 Determination of fecal coliform group in fertilizers
GB/T 19524.2 Determination of the mortality rate of Ascaris eggs in fertilizers
HG/T 2843 Standard titration solutions, standard solutions, reagent solutions and indicator solutions commonly used in chemical analysis of fertilizer products
NY 525 Organic fertilizers
NY/T 1113 Terminology of microbial fertilizers
NY/T 1978 Determination of mercury, arsenic, cadmium, lead and chromium contents in fertilizers
NY/T 2321 Inspection procedures for microbial fertilizer products

ICS 65.080
Agricultural Industry Standard of the People's Republic of China
NY/T798—2015
Replaces NY/T 798—2004
Compound microbial fertilizer
Compound microbial fertilizers2015-05-21 Issued
2015-08-01 Implementation
Ministry of Agriculture of the People's Republic of China
This standard was drafted in accordance with the rules given in (GB/T1.1-2009, NY/T798-2015
This standard replaces NY/T798-2004 "Compound Microbial Fertilizers". Compared with NY/T798-2004, in addition to editorial changes, the main technical changes are as follows:
Revised the mass fraction requirements of total nutrients; revised the pH range requirements;
Modified the limit indicators of arsenic (As), cadmium (Cd), lead (Pb), chromium (Cr), and mercury (Hg) in products Requirements; modified the judgment rules; added the limit requirements for each single nutrient in the total nutrients; added the technical index requirements for organic matter; deleted the technical index requirements for fineness; standardized the product testing method and other referenced documents. This standard was proposed by the Crop Production Management Department of the Ministry of Agriculture. The drafting units of this standard: Microbial Fertilizer and Edible Fungi Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture, Microbial Product Quality and Safety Risk Assessment Laboratory of the Ministry of Agriculture (Beijing), Institute of Agricultural Resources and Agricultural Zoning of the Chinese Academy of Agricultural Sciences. The main drafters of this standard: Jiang Xin, Li Jun, Ma Mingchao, Shen Delong, Wen Dawei, Cao Fengming, Li Li, Chen Huijun, Yang Xiaohong, Wang Zhanhua. The previous versions of this standard are: -NY/T 798-2004.
1 Scope
Compound microbial fertilizer
NY/T 798-2015
This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of compound microbial fertilizers. This standard applies to compound microbial fertilizers. 2 Normative references
The following references are indispensable for the application of this document. For all references with a date, only the version with the date is applicable to this document. For all references without a date, the latest version (including all amendments) is applicable to this document. GT/T8170 Numerical rounding rules and expression and determination of limit values ​​GB/T195 24.1 Determination of fecal coliform group in fertilizers GB/T19524.2 Determination of mortality of earworm eggs in fertilizers HC/T2843 Fertilizer products: standard titration solutions, standard solutions, reagent solutions and indicator solutions commonly used in chemical analysis NY525 Organic fertilizers
NY/T1113 Terminology of microbial fertilizers
NY/T1978 Determination of mercury, arsenic, cadmium, lead and chromium content in fertilizers NY/T2321 Inspection procedures for microbial fertilizer products 3 Terms and definitions
The terms and definitions defined in NY/T1113 and the following terms and definitions apply to this document. 3.1
Compound microbial fertilizers
Compound microbial fertilizers refer to living microbial products that are formed by the complex of specific microorganisms and nutrients and can provide maintenance or improvement of plant nutrition, increase the yield of agricultural products or improve the quality of agricultural products.
Total nutrients total primary nutrients
The sum of total nitrogen, available phosphorus pentoxide and potassium phosphate, calculated by mass fraction. 4 Requirements
4.1 Bacteria
The microbial strains used should be safe and effective. The producer should provide a classification and identification report of the strain, including the scientific name of the genus and species, morphology, physiological and biochemical characteristics and identification basis, as well as complete information on strain safety evaluation. For bioengineered bacteria, they should have relevant biosafety approval documents that allow large-scale release. 4.2 Appearance (sensory)
Uniform liquid or solid. Suspended liquid products should not have a large amount of precipitation, and the precipitation should be evenly dispersed after gentle manipulation; powdered products should be loose; granular products should be free of obvious mechanical impurities and uniform in size. 4.3 Technical indicators
The technical indicators of compound microbial fertilizers should meet the requirements of Table 1. The product dosage forms are divided into liquid and solid. Solid dosage forms include powdered and granular.
NY/T 798—2015
Table 1 Technical index requirements of compound microbial fertilizer products
Effective viable bacteria count (cfu)./g(mL.)
Total nutrients (NP,0, -K,0)b,%
Organic matter (on a baking basis), %
Impurity rate,
Water content,
In validity period, months
G. 020. 0
5. 5~-8. 5
8. 0-25.0
5. 5~8. 5
Compound microbial fertilizer containing two or more effective bacteria, the amount of each effective bacteria shall not be less than 301 million/g (ml.). The total nutrient content shall be a certain value within the specified range, and the absolute value of the negative deviation between the measured value and the indicated value shall not exceed 20%; the value of each single nutrient shall not be less than 15% of the total nutrient content. 0%.
This item shall be tested if the supervisory department or the arbitration parties deem it necessary. 4.4 Harmless index
The harmless index of the composite microbial fertilizer product shall meet the requirements of Table 2. Table 2 Harmless index requirements of composite microbial fertilizer products Item
Number of Escherichia coli. Individuals/g(mL)
Egg mortality rate,
Species (As) (calculated on a baking soda basis), mg/kg
(Cd) (calculated on a baking soda basis), ng/kg
Lead (Ph) (calculated on a baking soda basis), mg/kg
(r) (calculated on a baking soda basis) .mg/k
Required (Hg) (on a dry basis), g/kg
5 Test methods
5.1 General requirements
Limited standards
The preparation of reagent water and reagent solution used in this standard shall be carried out in accordance with the provisions of HG/T2813 when the specifications and preparation methods are not specified.
The numerical rounding of product technical indicators and the determination of product quality in this standard shall comply with the provisions of (B/T8170. 5.2 The determination of effective viable count, miscellaneous bacteria rate, moisture content and pH shall be carried out in accordance with the provisions of NY/T2321.
5. 3 Determination of total chlorine (N) content
According to the provisions of VY 525.
5.4 Determination of phosphorus (P2(05)) content
According to the provisions of NY525.
5.5 Determination of potassium (K,0) content
According to the provisions of NY/T 2321,
5.6 Determination of organic matter bzxz.net
According to the provisions of NY 525.
5.7 Determination of fecal coliform count
According to the provisions of (GI3/T19524.1): For the fecal coliform count determination process and the most probable number (MPN) retrieval table, please refer to Appendix D of NY/T2
2321,
5.8 Determination of worm egg mortality
According to the provisions of CB/T19524.2.
5. 9 The determination of arsenic (As), cadmium (Cd), lead (Pb), chromium (Cr) and mercury (Hg) shall be carried out in accordance with the provisions of NY/T1978.
6 Inspection rules
6.1 Inspection classification
6.1.1 Factory inspection
NY/T 798—-2015
When the product leaves the factory, the quality inspection department of the manufacturer shall conduct an inspection according to Table 1. The validity period shall not be checked during the inspection. 6.1.2 Type inspection
Type inspection shall include the index requirements in Table 2. In any of the following cases, type inspection shall be carried out. &) New product identification:
b) There are major changes and changes in the process and materials of the product:
c) When the factory inspection results are significantly different from the previous type inspection; d) The national quality supervision agency conducts random inspections. 6.2 Sampling
6.2.1 General
The products processed from each fermentation tank (or each batch of solid fermentation) are considered as a batch. Sampling inspection is carried out, and the sampling process is strictly to avoid contamination by foreign bacteria.
6.2.2 Sampling tools
Sterile plastic bags (bottles), metal spoons, samplers, measuring sticks, kraft paper packaging, glue, sampling strips and sampling sheets, etc. 6.2.3 Sampling method and quantity
Generally, sampling is carried out in the finished product warehouse, and random sampling is adopted. 5 bags (barrels) to 10 bags (barrels) are randomly selected. Under sterile conditions, 500g (ml) is sampled from each bag (barrel). Then the sampled samples are mixed and divided into 3 bags (bottles) according to the quartering method, and each bag (bottle) is not less than 500g (ml) 6.3 Judgment rules
Qualified products are those that meet the requirements for both technical indicators and harmlessness indicators. When the technical indicators of factory inspection meet the requirements of Table 1, the batch of products is judged to be qualified and shipped out of the factory after the quality certificate is issued. 7 Packaging, labeling, transportation and storage
7.1 Packaging
Select appropriate packaging materials, containers, forms and methods according to different product dosage forms to meet the basic requirements of product packaging. The product packaging should have a product certificate and instruction manual. The usage, method, dosage and precautions should be indicated in the instruction manual. 7.2 Labeling
The content marked on the label should comply with the provisions of national laws and regulations. 7.2.1 Product name and trademark
The generic name of the product specified in the national standard and industry standard should be indicated. The trade name or the product name with special features can be marked in small font under the generic name of the product. If the national standards and industry standards do not stipulate the common names of products, the product names that will not cause misunderstanding and confusion to users and consumers should be used. Enterprises can mark registered trademarks. 7.2.2 Product specifications
The net weight of the product in each package should be indicated, and the national legal measurement unit should be used. The error range of the marked net weight shall not exceed 25% of its stated weight.
NY/T 798—2015
7.2.3 Product implementation standards
The standard number implemented by the product should be indicated. 7.2.4 Product registration certificate number
The valid product registration certificate number should be indicated.
7.2.5 Producer name and address
The name, address, postal code and contact number of the producer who has been registered and can bear the product quality responsibility in accordance with the law should be indicated. Imported products III shall not indicate the name and place of the producer, but shall indicate the origin (country/region) of the product, as well as the name and address of the agent, importer or seller registered in China in accordance with the law. 7.2.6 Production date or production batch number
The production date or production batch number of the product shall be indicated on the production certificate or product packaging. 7.2.7 Shelf life
Expressed as "shelf life
7.3 Transportation
months (or years)".
There shall be a cover during transportation to prevent rain, sun and high temperature. When the temperature is below 0℃, take appropriate measures to ensure product quality. Load and unload gently to avoid damage to the packaging. It is strictly forbidden to mix or transport with other items that are toxic or harmful to compound microbial fertilizers. 7.4 Purchase and storage
Products should be stored in a cool, dry and ventilated warehouse and shall not be piled in the open air to prevent sun and rain and avoid the influence of adverse conditions. 4
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