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What is the technical standard of organic fertilizer

pubdate:2020-07-17

We know that the main indicators of organic fertilizer standard ny525-2012 are: total nutrient ≥ 5, organic matter ≥ 45, moisture ≤ 30, pH 5.5-8.5. According to Xiaobian, there are many organic fertilizers in line with several indicators on the market, but the prices are uneven, ranging from 300 yuan per ton to 3000 yuan per ton. Under the premise of meeting the standard, why is the price of organic fertilizer so different? What is the standard of organic fertilizer?

Appearance: organic fertilizer is brown or grayish brown, granular or powdery, no mechanical impurities, no odor.

The project index of organic fertilizer should meet the following requirements.

Project indicators

Organic matter content (on dry basis) / () ≥ 45

Total nutrient (n + P2O5 + K2O) content (on dry basis) / () ≥ 5.0

Moisture (free water) content / () ≤ 30

PH 5.5-8.5

The content of heavy metals in organic fertilizer, the rate of Ascaris eggs and E. coli value should meet the requirements of gb8172.

Table 2-1 technical indexes of organic fertilizer (ny525-2002)