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GB/T 33469-2016: Cultivated land quality grade
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GB/T 33469-2016: Cultivated land quality grade

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Cultivated land quality grade ICS 13.080.01 B10 National Standards of People's Republic of China Cultivated land quality grade 2016-12-30 release 2016-12-30 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 Grade of cultivated land grade 3 4.1 General 3 4.2 Classification of cultivated land quality grade 3 4.3 Arable land quality indicators to obtain 4 4.4 Determine the weight of each indicator 6 4.5 Calculate the membership degree of each index 4.6 Calculate the comprehensive index of cultivated land quality Classification of Cultivated Land Quality Level Investigation and Evaluation of Cultivated Land Cleanliness Comprehensive assessment of cultivated land quality Appendix A (Normative Appendix) Grade of Cultivated Land Quality Classification Area 11 Appendix B (Informative Annex) Indicators of Regional Cultivated Land Quality Ranking Appendix C (normative) Determination of soil organic matter Appendix D (normative) Determination of soil mechanical composition Appendix E (normative) Determination of soil bulk density Appendix F (normative) Determination of total water - soluble salts in soil Appendix G (normative) Determination of chloride content in soils Appendix H (normative) Determination of sulfate content in soils Appendix I (normative) Determination of soil pH Reference 48

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the Ministry of Agriculture of the People's Republic of China. This standard is under the responsibility of the National Soil Quality Standardization Technical Committee (SAC/TC404). The drafting unit of this standard. National Agricultural Technology Extension Service Center, Beijing Soil and Fertilizer Workstation, Shandong Province Soil and Fertilizer Station, Jiangsu Province Geological and Agricultural Environmental Protection Station, Shanxi Province Soil and Fertilizer Workstation, South China Agricultural University. The main drafters of this standard. arbitrary, Zeng Yande, He Caiwen, Xie Jianhua, Zhao Yongzhi, Zhong Luqing, Xue Yandong, Chen Mingquan, Li Tao, Wang Xukui, ZHANG Qian-zhu, LI Yong-tao, ZHENG Lei, HU Liang-bing, LI Rong, XIN Jing-shu. Cultivated land quality grade

1 Scope

This standard stipulates the division of cultivated land quality, the determination of indicators, the division of cultivated land quality and other content. This standard applies to all levels of administrative regions and specific areas of cultivated land quality grade division. The classification of the quality of the garden can refer to the implementation.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Soil Environmental Quality Standard Chinese Journal of Soil Science and Technical specification for soil environmental monitoring

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Cultivated land Land for crop cultivation. 3.2 Cultivated land productivity In the current management level, by the soil site conditions, natural attributes and other related factors constitute the cultivated land production capacity. 3.3 Soil health status Soil as a dynamic life system has the ability to sustain its function, with cleanliness, and biodiversity. Note. The degree of cleanliness reflects the extent to which soils are affected by toxic and hazardous substances such as heavy metals, pesticides and agricultural film residues; biodiversity reflects soil fertility Rich degree. 3.4 Terrain parts partsoftheterrain With a specific morphological features and genesis of small and medium scale units. 3.5 Field slope fieldsurfaceslope The angle between farm slope and horizontal plane. 3.6 Groundwater depth The distance from the diving surface to the ground surface. ...