Preparation and application methods of compound fertilizer matrix

A compound fertilizer and substrate technology, applied in the fields of application, nitrogen fertilizer, organic fertilizer, etc., can solve the problems of inconvenient fertilizer application, easy deliquescence of calcium phosphate and calcium magnesium phosphorus compound fertilizer, and high cost, so as to improve soil air permeability and improve fertilizer efficiency. The effect of utilization rate and sufficient raw material reserves

Inactive Publication Date: 2021-03-02
XILINGOL VOCATIONAL COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of fertilizer compounding, agglomeration is prone to occur, which brings inconvenience to the application of fertilizers and affects the use effect of fertilizers
For example, potassium nitrate is very easy to agglomerate, and it is easy to form a large number of agglomerates when mixed by ordinary compounding methods.
[0003] CN108911823A discloses a compound fertilizer and its production process. It adopts the technology of mixing calcium superphosphate and calcium magnesium phosphorus to overcome the defect that the compound fertilizer in the prior art is easy to deliquescence, prolongs the hydrolysis time of urea, improves fertilizer efficiency, and is widely applicable Used in the production of compound fertilizer
The above two technologies only mix different fertilizers, and the improvement of fertilizer efficiency is not obvious
CN103771911A discloses a method for producing medium-element soil conditioner by using industrial silicon-calcium board waste. The method adopts 800-1000°C roasting for activation treatment, and the cost is high. At the same time, due to the poor activity of silicon in the waste, the product The content of citric acid soluble silicon is low, only about 20%
CN107673844A discloses a preparation method of granular potassium nitrate fertilizer, the method has undergone multiple moldings, the process is complicated, and the production cost is high
[0004] Based on the above, it can be seen that the problem of agglomeration in the compounding process of fertilizers, especially those involving potassium nitrate, is difficult to solve, and it is urgently needed to be rich in beneficial trace elements and have the ability to reduce soil bulk density, loosen soil, and improve soil ventilation. The permanent compound fertilizer matrix is ​​used in conjunction with the fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] by CaO / SiO 2 Mix calcium hydroxide and quartz stone at a molar ratio of 0.4, dissolve in 0.05mol / L NaOH solution, control the solid-liquid ratio to 1:40g / mL, and carry out hydrothermal reaction of the mixed slurry in the reactor, The reaction temperature is 250° C., and the reaction time is 30 h. The resulting product is mixed with potassium nitrate at an addition rate of 10%, and used for planting corn. Compared with normal fertilization, the amount of potassium nitrate is reduced by 10%, and the yield is increased by 2.6%. And the mixture has no caking phenomenon.

Embodiment 2

[0022] by CaO / SiO 2 Mix phosphogypsum with fly ash and quartz stone at a molar ratio of 1.4:1, dissolve in 2.5 mol / L NaOH solution, control the solid-liquid ratio to 1:10g / mL, and put the mixed slurry in the reaction kettle Carry out hydrothermal reaction, the reaction temperature is 100°C, and the reaction time is 6h. The obtained product is added to the trace element compound fertilizer with an addition amount of 95%, and is used for planting corn. Compared with normal fertilization, the amount of trace element fertilizer is reduced by 10%, and the yield is increased by 8.7%.

Embodiment 3

[0024] by CaO / SiO 2 Mix calcium hydroxide and fly ash at a molar ratio of 1.2, dissolve in 0.8mol / L KOH lye, control the solid-liquid ratio to 1:300g / mL, and heat the mixed slurry in a reactor Reaction, the reaction temperature is 180°C, and the reaction time is 9h. The resulting product was added to humic acid in an amount of 50% and used for planting rapeseed. Compared with normal fertilization, the amount of humic acid was reduced by 25%, and the yield was increased by 10.6%.

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Abstract

The invention relates to the technical field of fertilizers, particularly to a preparation method and use method of a compound fertilizer matrix. The preparation method comprises the following steps:mixing a calcium source and a silicon source, performing hydrothermal reaction under an alkaline condition to obtain a substance A, and mixing the substance A with fly ash and coal gangue powder to obtain a compound fertilizer matrix. The use method comprises the step of mixing the obtained compound fertilizer matrix with a plant growth regulator, a nitrogen-phosphorus-potassium fertilizer, a trace element fertilizer and an organic fertilizer for use. After the compound fertilizer matrix is mixed with other fertilizers for use, the effects of regulating the plant growth, promoting the absorption of beneficial elements by plants, improving the fertilizer utilization rate, retaining water, resisting drought and improving the air permeability of soil can be achieved, and the caking problem inthe fertilizer compounding process can be effectively solved. The method has the characteristics of simple process, low energy consumption, sufficient raw material storage and the like.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a method for preparing and using a compound fertilizer substrate. Background technique [0002] Excessive use of chemical fertilizers is an important factor in soil pollution. Excessive use of chemical fertilizers can lead to soil compaction, increased acidification, and salinization, resulting in extremely low fertilizer utilization rates, groundwater pollution, poor crop growth, reduced quality, and low profitability. The low utilization rate of chemical fertilizers has always been a problem in my country's agricultural fertilization. Studies have found that the utilization rate of phosphate fertilizer in Chinese farmland is only about 10% to 25%. The utilization rate of nitrogen fertilizer is only 35% in the current season, and it is even lower in the greenhouse, only 10%. According to data from the Food and Agriculture Organization of the United Nations, from 1980 to 20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80
CPCC05C5/02C05D3/00C05D3/02C05G3/00C05G3/80C05D9/00C05D9/02C05F11/02
Inventor 侯泽建马淑花张宏明王晓辉丁海萍其其格周筱王月娇
Owner XILINGOL VOCATIONAL COLLEGE
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