urea containing humic acid is one of the new value-added urea products, chinese academy of agricultural sciences new fertilizer research group after 10 years of research, the latest achievements of the experiment. product color is black, adding urea synergist by chelating polymer active humic acid preparation technology, 46% nitrogen, humic acid content of 0.12%. high active humic acid containing a large number of carboxyl, phenolic hydroxyl and carbonyl active groups and trace elements of zinc can promote crop growth, enhance photosynthesis and on the activity of soil urease have good inhibitory effect; urea reaction happens to produce zinc corrosion of urea and slow urea in the soil solution and the release rate. in addition, humic acid urea zinc but also to improve soil fertility, supplement and activation of soil trace elements etc..
产品 | 项目 | 指 标 | ||
优等品 | 一等品 | 合格品 | ||
腐殖酸尿素 | 颜色 | 黑色或棕色 | ||
n% ≥ | 46.4 | 46.2 | 46.0 | |
biu % ≤ | 0.9 | 1.0 | 1.5 | |
h2o% ≤ | 0.4 | 0.5 | 1.0 | |
粒度% ≥ | 93 | 90 | 90 | |
腐植酸% ≥ | ||||
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