GB/T 25246-2025 English PDF

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GB/T 25246-2025: Technical specification for land application of livestock and poultry manure fertlizer
Status: Valid

GB/T 25246: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25246-2025	359	Add to Cart	4 days	Technical specification for land application of livestock and poultry manure fertlizer	Valid
GB/T 25246-2010	229	Add to Cart	3 days	Technology code for land application rates of livestock and poultry manure	Valid

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Basic data

Standard ID: GB/T 25246-2025 (GB/T25246-2025)
Description (Translated English): Technical specification for land application of livestock and poultry manure fertlizer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B40
Classification of International Standard: 65.020.99
Word Count Estimation: 18,124
Date of Issue: 2025-01-24
Date of Implementation: 2025-08-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 25246-2025: Technical specification for land application of livestock and poultry manure fertlizer

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 65.020.99 CCSB40 National Standard of the People's Republic of China Replaces GB/T 25246-2010 Technical specification for returning livestock and poultry manure to fields manurefertlizer Released on 2025-01-24 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements 2 5 Application rate 2 5.1 Determination of Principles 2 5.2 Calculation method 2 5.3 Recommended application rate for crops 2 6 Application method 2 6.1 Methods of solid manure application 2 6.2 Liquid manure application method 3 7 Sampling and analytical methods 3 7.1 Determination of sampling quantity 3 7.2 Sampling Methods 4 7.3 Analytical methods 4 8 Recording and effect monitoring 4 8.1 Record 4 8.2 Effect Monitoring 4 Appendix A (Normative) Calculation formula for the amount of livestock and poultry manure returned to the field and determination of corresponding parameters 5 A.1 Determination of fertilizer application amount under the conditions of field trials and soil and fertilizer analysis and testing 5 A.2 Determination of fertilizer application amount without field trials and soil and fertilizer analysis 6 A.3 Recommended values of nitrogen and phosphorus required for different crops to produce 100kg of yield 6 A.4 Recommended value of the proportion of yield created by fertilization to total yield 7 A.5 Recommended value of manure nutrient utilization rate in the current season 8 Appendix B (Informative) Recommended Application Rates of Livestock and Poultry Manure 9 B.1 Recommended application amount of solid manure for crops in the current season (taking pig manure as an example) 9 B.2 Recommended application amount of liquid manure for crops in the current season10 B.3 Conversion factor 11 Appendix C (Informative) Records of livestock and poultry manure returned to the fields and effect monitoring records 12 C.1 Record of returning manure to fields12 C.2 Monitoring records of the effect of returning manure to fields12 Reference 13

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 25246-2010 "Technical Specification for Returning Livestock and Poultry Manure to Farmland". Compared with GB/T 25246-2010, In addition to the integration and editorial changes, the main technical changes are as follows. a) The name of the standard has been changed; b) Added the terms “livestock and poultry manure”, “livestock and poultry manure”, “solid manure”, “liquid manure” and “manure returned to the field” (see 3.1, 3.2, 3.3, 3.4, 3.5); c) The term “safe use” has been deleted (see 3.1 of the.2010 edition); d) The hygienic requirements for compost and biogas fertilizer have been changed and merged into the hygienic indicators for livestock and poultry manure (see 4.2,.2010 edition). 4.1.2 and 4.1.3); e) Deleted the technical requirements for the collection, storage and treatment of feces (see 4.1.4 of the.2010 edition); f) The limits on heavy metal content in livestock and poultry manure have been deleted, and requirements for compliance with relevant standards have been proposed (see 4.3, 4.1.5 of the.2010 edition); g) Added requirements for testing soil salt content after returning manure to the field (see 4.4); h) Deleted the relevant content on the application of biogas slurry as foliar fertilizer and the requirements on the application of livestock and poultry manure as basal fertilizer (see 4.2.2.3 of the.2010 edition). and 4.2.2.5); i) The calculation method and recommended application amount of manure have been changed (see 5.2, 5.3, Appendix A, 4.2.3, Appendix A of the.2010 edition); j) Added liquid manure application method (see 6.2); k) The sampling and analysis methods have been changed (see Chapter 7, Chapter 5 of the.2010 edition); l) Deleted the analytical methods for parasite egg sedimentation rate, schistosome egg count, total arsenic, copper and zinc (see 5.3.3, 5.3.5, 5.3.6 and 5.3.7); m) Added record keeping and effect monitoring (see Chapter 8). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee on Animal Husbandry Standardization (SAC/TC274). This document was drafted by. Ministry of Agriculture and Rural Affairs Environmental Protection Research and Monitoring Institute, China Agricultural University, Jiangsu Academy of Agricultural Sciences, Shandong Provincial Agricultural University Academy of Sciences, National Animal Husbandry Station, Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences. The main drafters of this document are. Zhang Keqiang, Zuo Lingling, Du Huiying, Shen Shizhou, Li Ji, Wang Feng, Sheng Jing, Ding Yongzhen, Li Yan, Du Lianzhu, Shang Bin, Liang Junfeng. The previous versions of this document and the documents it replaces are as follows. ---First published in.2010 as GB/T 25246-2010; ---This is the first revision. Technical specification for returning livestock and poultry manure to fields

1 Scope

This document specifies the general requirements, application amount, record keeping and effect monitoring of livestock and poultry manure returning to the fields. Field application methods, sampling and analysis methods. This document applies to the return of livestock and poultry manure to the fields after being harmlessly treated and decomposed.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 7959 Hygienic requirements for harmless treatment of feces GB/T 19524.2 Determination of Ascaris egg mortality in fertilizers GB/T 25169 Technical Specification for Monitoring of Livestock and Poultry Manure GB/T 27522 Technical Specification for Monitoring of Wastewater from Livestock and Poultry Farming NY/T 1121.16 Soil testing Part 16.Determination of total water-soluble salt content in soil

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 A general term for feces, urine, sewage, breeding bedding and a small amount of scattered feed produced during livestock and poultry farming. [Source. GB/T 25171-2023, 3.4, modified] 3.2 The main raw material is livestock and poultry manure, which is used as fertilizer after being harmlessly treated and decomposed. 3.3 After being properly decomposed by physical, chemical, biological and other harmless treatments, livestock and poultry manure can be used as solid fertilizer. [Source. GB/T 25171-2023, 5.4.16, modified] 3.4 After being properly decomposed by physical, chemical, biological and other harmless treatments, livestock and poultry manure can be used as liquid fertilizer. [Source. GB/T 25171-2023, 5.4.15] 3.5 Manure land application The livestock and poultry manure is used as fertilizer in agricultural planting after being harmlessly treated and composted. [Source. GB/T 25171-2023, 5.4.1] ......

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