CN1785922A

CN1785922A - Amino acid silicon foliage fertilizer

Info

Publication number: CN1785922A
Application number: CN 200410065452
Authority: CN
Inventors: 邵建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-06
Filing date: 2004-12-06
Publication date: 2006-06-14

Abstract

The present invention relates to an amino-acid silicon foliage fertilizer. It is made up by using waste protein as main raw material, utilizing liquid natronite as hydrolysis agent and using potassium hydroxide as catalyst through a certain hydrolysis process. At the same time, in the amino-acid silicon solution the chelate salt of trace elements of iron, copper, manganese and zinc, etc. chelated by EDTA and sodium molybdate are added so as to obtain the invented foliage fertilizer which uses amino-acid silicon as main component and contains several trace elements.

Description

Amino acid silicon foliage fertilizer

The invention relates to an amino acid silicon foliar fertilizer

The silicon element is listed as an essential element of crops and ranked behind N, P, K elements, and becomes the fourth major element for the growth of the crops, especially the silicon-favored crops.

At present, most of silicon fertilizers in the market of China are citric-soluble silicon-calcium fertilizers and silicon-potassium fertilizers which have poor water solubility, large using amount, slow action and unobvious effect, and in order to improve the solubility of silicon, patent application number (96112383.4) grinds blast furnace water quenching slag to 80-100 meshes and adds concentrated sulfuric acid for acidification treatment to enable the blast furnace water quenching slag to become H₂SiO₃H produced by the process₂SiO₃Although the solubility of silicon in water can be improved, the stability is extremely poor, and when the silicon fertilizer is dried or placed for drying, the silicon fertilizer is quickly decomposed and dehydrated as follows:

formed SiO₂Becomes ineffective silicon which can not be absorbed by plants, and reduces the content of effective silicon in the silicon-calcium fertilizer and the silicon-potassium fertilizer.

In order to improve the solubility of silicon, water glass is prepared into powder through spray drying in the market to be used as a high-efficiency silicon fertilizer, the silicon fertilizer has high solubility but is stable under the alkaline condition that the pH is more than or equal to 14, and the silicon fertilizer is used as a base fertilizer, so that the cost is high, and the silicon fertilizer is easy to react with other elements in soil to lose efficacy.

The invention aims to provide the amino acid silicon foliar fertilizer which can be dissolved in water, has good stability, small dosage, quick absorption, good effect and easy absorption by crops, contains various chelated microelements necessary for the crops, has a synergistic effect, promotes the absorption of silicon and fully supplements the necessary nutrient elements for the crops.

The invention is characterized in that: the process effectively reduces the alkalinity of the water glass, and the amino acid is an amphoteric compound, can play a good buffering role on the alkalinity, and can effectively improve the SiO content in the water glass₃ ^3-Stability of (2). The amino acid is a high-efficiency organic fertilizer, can stimulate the growth of crops and can be directly absorbed by the crops.

The flow chart of the process is shown in figure 1

The invention is realized in such a way

1. Adding solid sodium silicate into hot water, boiling to dissolve, adding appropriate amount of KOH, and extractingHigh rate of dissolution of sodium silicate when Na is in sodium silicate solution₂SiO₃When the concentration is more than 20 percent, putting the mixture into a liquid sodium silicate pool.

Dissolving soluble salts such as sulfates, chlorides and nitrates of Fe, Cu, Mn and Zn in water, adding ethylenediamine tetraacetic acid with the total amount of trace elements of 2mol, heating to 90-100 ℃ and carrying out chelation reaction for 1-3 hours to obtain the ethylenediamine tetraacetic acid trace element chelated salt.

3. Adding waste protein into an enamel reaction kettle, simultaneously adding liquid sodium silicate with the amount of 1-2.5 times of the total amount of the waste protein, heating and hydrolyzing for 2-6 hours, discharging, removing residues through a filter press to obtain an amino acid aqueous solution, adding 1-3% of chelated salt of trace elements EDTA, boric acid and ammonium molybdate, and uniformly stirring and mixing to obtain the amino acid silicon foliar fertilizer.

Example 1

1. Dissolving sodium silicate in boiling water, adding appropriate amount of KOH (sodium hydroxide) while adding Na₂SiO₃When the concentration reaches 20-35%, the solution is put into a liquid sodium silicate pool for storage and standby.

2. Weighing FeSO₄·7H₂O 100Kg，ZnSO₄·7H₂O 80Kg，MnSO₄·H₂O50Kg，CuSO₄·5H₂Dissolving O4 Kg in 766Kg of water, adding 500Kg of ethylene diamine tetraacetic acid, heating for dissolving, chelating for 1-3 hours, the total amount of the solution is 1500Kg, and the content of trace elements is 3.5%.

3. Adding 1500Kg of 25% Na into a 3000L enamel reactor₂SiO₃Heating 1000Kg of solution and waste chicken hair to 90-100 ℃, hydrolyzing for 6 hours, filtering and removing impurities, adding 500Kg of EDTA chelating solution of Fe, Cu, Mn and Zn into the filtrate, dissolving to obtain the liquid amino acid silicon foliar fertilizer, wherein the total amount of the solution is 3000Kg, and spray drying to obtain the powdery solid amino acid foliar fertilizer.

In the powdery solid amino acid foliar fertilizer produced by the method, the amino acid is more than or equal to 20 percent, and SiO is contained₂≥10％，Fe+Cu+Mn+Zn+B+Mo≥1％。

Example 2

1. Weighing FeSO₄·7H₂O 120Kg，ZnSO₄·7H₂O 60Kg，MnSO₄·H₂O50Kg，CuSO₄·5H₂O5 Kg, dissolving Na₃BO₃EDTA320Kg was added to 500Kg of water to dissolve and chelate for 3 hours.

2. Adding 2000Kg of 20% Na into a 3000L enamel reactor₂SiO₃Solutions ofAdding 1500Kg of cottonseed cake, heating for hydrolysis for 3 hours, press-filtering, adding 500Kg of EDTA chelating solution of Fe, Cu, Mn, Zn, B and Mo into the filtrate, wherein the total amount of the solution is 3000Kg, and the solution is the liquid amino acid silicon foliar fertilizer.

The amino acid in the amino acid silicon liquid fertilizer is more than or equal to 12 percent, and the content of SiO is larger than or equal to 12 percent₂≥5％，Fe+Cu+Mn+Zn+B+Mo≥0.5％。

The dosage of the amino acid foliar fertilizer is 200 plus 500g per mu, and the amino acid foliar fertilizer can be mixed with alkaline pesticide for use.

Claims

1. A foliar fertilizer containing amino-acid silicon is prepared from waste protein as main raw material, liquid sodium silicate as hydrolytic agent, potassium hydroxide as reinforcing agent, and surfactant and chelated Fe, Cu, Mn and Zn salt and sodium molybdate through adding them to the solution of amino-acid silicon.

2. The waste protein according to claim 1 may be keratin, waste animal protein, vegetable protein, etc.

3. The alkaline hydrolysis process as claimed in claim 1, wherein the waste protein and the foam lye are prepared in a ratio of 1: 1-3, water is added for 2-4 hours, and the addition amount of potassium hydroxide is 2-10% of the waste protein.

4. A microelement chelate according to claim 1, which is prepared by chelating iron, copper, manganese, zinc and other metal elements with ethylenediaminetetraacetic acid as a chelating agent, wherein the molar ratio of the ethylenediaminetetraacetic acid to the metal elements is 2: 0.8-1.

5. The surfactant of claim 1 is an anionic and nonionic surfactant.

6. The amino acid foliar fertilizer produced according to claim 1 may be liquid or may be sprayedDrying to obtain powdery solid, wherein the amino acid content in the liquid amino acid silicon foliar fertilizer is more than or equal to 10 percent, and the SiO₂Not less than 5%, Fe + Cu + Mn + Zn + Mo + B not less than 0.5%, solid amino acid silicon leaf fertilizer, amino acid not less than 20%, SiO₂≥10％，Fe+Cu+Mn+Zn+Mo+B≥1％。