GB/T 44971-2024 in English

Interpretation of GB/T44971—2024 National Standard of the People's Republic of China

This standard specifies the requirements for the classification of soil selenium content and describes the sampling and detection methods. It is applicable to the classification of soil selenium content in agricultural land and can be used as a reference for other types of soil. y > 0.50> The selenium content of edible agricultural products may be too high Selenium-rich pH ≤ 5.5 0.40 < α ≤ 3.0 0.05 < y ≤ 0.50 Has the potential to produce selenium-rich edible agricultural products 5.5 < pH ≤ 7.5 0.35 < α ≤ 3.0 pH > 7.5

The importance of soil selenium content classification

Background analysis:With the expansion of agricultural production and the improvement of agricultural product quality requirements, the content of trace elements such as selenium in the soil has become a focus of attention. Scientifically classifying soil selenium content can help guide agricultural production decisions and ensure the safety of agricultural products.

Sampling and testing methods

According to GB/T44971-2024 standard:

• Sample collection depth:20 cm for cultivated land, forest land, grassland, 40 cm for garden land.
• Handling and storage:Follow the provisions of NY/T1121.1.

Detection technology

The following standards were used for soil pH determination, total selenium and effective selenium determination respectively:

Implementation suggestions