T/CHAIA 8-2020 in English
VALIDPotassium humate compound fertilizer
- Issued on:2020-07-11
- Implemented on:-
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$160.00
$156.00
$156.00
本标准规定了腐植酸钾复合肥料的要求、试验方法、检验规则、包装、标识、运输和贮存。
本标准适用于以矿物源腐植酸钾为原料，与无机肥料通过化学方法和（或)物理混合造粒制得的腐植酸钾复合肥料，以及矿物源腐植酸钾涂覆于无机肥料表面制备得到的包裹型腐植酸钾复合肥料。
Introduction
Analysis of the core content of the standard
| Indicator type | Type I | Type II | Type III |
|---|---|---|---|
| Total nutrients (N+P₂O₅+K₂O) | ≥40.0% | ≥30.0% | ≥25.0% |
| K₂O brought in by potassium humate | ≥1.2% | ≥2.0% | ≥0.5% |
| Water-soluble humic acid | ≥5.0% | ≥8.0% | ≥2.0% |
Technology Evolution Analysis
This standard innovatively divides the composite process of mineral source potassium humate and inorganic fertilizers into three categories: chemical synthesis, physical mixing, and surface coating. Compared with traditional compound fertilizers, its technological breakthroughs are reflected in:
- Humic acid functional groups (carboxyl/phenolic hydroxyl) can chelate metal ions and reduce phosphorus fixation
- The limit of water-soluble humic acid ≥2% ensures biological activity
- Strict control of sodium ions ≤0.5% to avoid secondary salinization of soil
Key detection methods
Determination of water-soluble humic acid adopts the acid precipitation weight method (refer to T/CHAIA 5-2018), please note:
- Precipitation endpoint control when adjusting pH=1
- Temperature stability of vacuum drying at 60℃
- Parallel sample deviation should be <5%
Implementation suggestions
| Soil type | Recommended model | Synergistic principle |
|---|---|---|
| Acidic soil | Type II | Humic acid neutralizes acidity and improves phosphorus effectiveness |
| Saline-alkali land | Type I | Low sodium formula reduces salt damage |
Sample only — not a preview of T/CHAIA 8-2020
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