Duoyicheng issues China's First Enterprise Standard of PCU
time:2017-02-10 13:34 source:未知 author:admin
printChina's First Enterprise Standard of Polymer Coated Urea (Q/DYC01-2015) made by Shandong Duoyicheng Fertilizer Technology Co., Ltd. in April 14, 2015. Compared to China national standard for controlled release fertilizers. Duoyicheng enterprise standard has improved a lot of content, and exacted some indicators, clear many projects, making the indicators and testing methods of controlled release urea are more scientific and strict.
Duoyicheng Controlled Release Nitrogen Fertilizer Enterprise Standard (Q/DYC01-2015）
|
Items |
Index |
|
Nitrogen content, % |
≥44.0 |
|
Biuret % |
≤1.0 |
|
H2O content, % |
≤1.0 |
|
Water insoluble substances, % |
≤5.0 |
|
Granule size(2.00mm-4.75mm) |
≥90 |
|
Nutrient release duration /D |
Marked
|
|
Initial nutrient release rate /%，25℃ |
≤5 |
|
7 days cumulative nutrient release rate/%，25℃ |
≤12 |
|
28 days cumulative nutrient release rate/%，25℃ |
≤50 |
|
Cumulative nutrient release rate in release duration/% |
≥80 |
