Humic acid long-acting compound fertilizer and its preparing method

A humic acid and compound fertilizer technology, applied in urea compound fertilizer, nitrogen fertilizer, organic fertilizer, etc., can solve the problems of loss of slow release performance, humic acid coating layer does not have waterproof performance, waste of formaldehyde, etc., to reduce the broken rate , reduce the fixed ratio, increase the effect of fertilizer efficiency
CN1491924AInactive Publication Date: 2004-04-28SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
Publication Date
2004-04-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to long-acting compound fertilizer, and is especially a kind of long-acting compound humic acid fertilizer. The long-acting compound humic acid fertilizer consists of composite of humic acid, urea and formaldehyde in 25-40 wt% and soluble nitrogen fertilizer, phosphate fertilizer and potash fertilizer 60-75 wt%. The composite of composite of humic acid, urea and formaldehyde consists of turf, urea, ammonium and formaldehyde solution; and the soluble nitrogen fertilizer, phosphate fertilizer and potash fertilizer are in the weight ratio of 12-25 to 30-40 to 10-20. The product is suitable for various soil, especially for growing green vegetable, flower and fruit tree.
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Description

technical field

[0001] The invention relates to a long-acting compound fertilizer, in particular to a humic acid long-acting compound fertilizer and a preparation method thereof. Background technique

[0002] In the prior art, conventional chemical nitrogen fertilizers have good water solubility and are easily lost after being applied to the soil. into an invalid state, especially in calcareous soils. Therefore, it is necessary to develop and produce slow and controlled release fertilizers that can not only maintain the long-term effect of nitrogen fertilizer but also reduce the fixation of phosphorus fertilizer.

[0003] Using humic acid as raw material to prepare organic compound fertilizer is a major invention in fertilizer manufacturing technology. Humic acid is an unstable porous, network polymer structure, 50% to 55% of its structure is composed of amino acids, ethanolamine, polycyclic aromatic nuclei, and oxygen-containing functional groups, and has huge surface ene...

Claims

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