Organic/inorganic compound fertilizer for improving phosphorus use efficiency and preparation method thereof

A technology of compound fertilizer and utilization rate, applied in the direction of fertilizer mixture, application, fertilization device, etc., can solve the problems such as no specific technical solutions are given, and achieve the effect of enhancing mobility, improving soil aggregate structure, and improving water retention

Active Publication Date: 2013-07-17
SHANDONG BAOYUAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research in this field has the above-mentioned results on organic complexes promoting soil phosphorus activation, reducing phosphorus fixation and improving phosphorus utilization rate, but how to integrate various factors and prepare fertilizers with comprehensive performance has not given a specific technical plan

Method used

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  • Organic/inorganic compound fertilizer for improving phosphorus use efficiency and preparation method thereof
  • Organic/inorganic compound fertilizer for improving phosphorus use efficiency and preparation method thereof
  • Organic/inorganic compound fertilizer for improving phosphorus use efficiency and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation of organic binding state phosphate fertilizer

[0025] according to figure 1 process. Take 40kg of monoammonium phosphate and dissolve it in 100kg of water until it is completely dissolved. Take 3.0kg of furfural residue and 3.0kg of fermented yeast residue, combine and mix, add 18kg of monoammonium phosphate solution, place in a reaction kettle, and react at a constant temperature for 40min at 150°C until the yellow solid powder is completely melted. Add fermented yeast slag (purchased by Hubei Yichang Huifeng Fertilizer Co., Ltd., product index: organic matter ≥ 50%, moisture ≤ 30%) to the obtained liquid organic combined phosphate fertilizer at a ratio of 1:1 by weight, and fully Stir evenly, dry at 80°C until the water content is 18%, and obtain a solid organic-bound phosphate fertilizer. After testing, the content of available phosphorus is 22.7%.

Embodiment 2

[0026] Embodiment 2: the preparation of modified humic acid

[0027] according to figure 2 According to the process, the weathered coal with an organic matter content (on a dry basis) of 75% is placed in a fluidized bed reactor, the weathered coal or lignite is boiled with hot air, and 15wt% dilute nitric acid is sprayed at a ratio of weathered coal: dilute Nitric acid=1:0.6, react at a temperature of 90°C for 80 minutes.

Embodiment 3

[0028] Embodiment 3: the preparation of the organic-inorganic compound fertilizer that improves phosphorus utilization rate

[0029] For the preparation process, see image 3 .

[0030] (1) Dissolve 40kg of monoammonium phosphate in 100kg of water until completely dissolved. Take 3.0kg of furfural residue and 3.0kg of fermented yeast residue, combine and mix, add 18kg of monoammonium phosphate solution, place in a reaction kettle, and react at a constant temperature for 60min at 140°C until the yellow solid powder is completely melted. Available phosphorus (P 2 o 5 ) content is the highest, reaching 12.2%. Add fermented yeast slag to the obtained liquid at a ratio of 1:1 by weight, stir well and evenly, dry at 90°C until the water content is 17%, and obtain a solid organic bound phosphate fertilizer. After testing, the content of available phosphorus was 25.7%.

[0031] (2) Put lignite with an organic matter content (calculated on a dry basis) of 79% in a fluidized bed r...

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Abstract

The invention provides an organic / inorganic compound fertilizer for improving phosphorus use efficiency. The compound fertilizer consists of the following components according to parts by weight: 4.0-5.0 parts of organic combined phosphatic fertilizer, 2.0-3.0 parts of urine, 1.8-2.5 parts of potassium sulfate, 0.6-0.8 part of modified humic acid, 0.4-0.5 part of zeolite powder, 0.08-0.15 part of an ammonium citrate solution, and 0.03-0.07 part of a polyglutamic acid solution. According to the compound fertilizer provided by the invention, the inorganic phosphorus is combined onto an organic molecular structure in the form of a phosphate ion, so that the immobilization of the phosphate ion in the soil is reduced; through modifying the humic acid, the quantity of active functional groups of the humic acid is increased, and by adding two phosphorus activating agents of zeolite powder and ammonium citrate, the phosphorus activating effect is enhanced; and through the addition of water-retaining agent polyglutamic acid, the fertilizer can improve water retaining performance, water permeability and air permeability of the soil, enhances mobility of the phosphorus in the soil, and improves granular structure of the soil.

Description

technical field [0001] The invention belongs to the field of compound fertilizers, in particular to a compound fertilizer with minerals as the base material. Background technique [0002] Phosphorus is an essential nutrient for plants. 74% of the cultivated land in my country is deficient in phosphorus. The seasonal utilization rate of phosphate fertilizers is generally only 10%-20%, which not only causes direct economic losses, but also has adverse consequences on the environment that people depend on for survival. The reason for the low utilization rate of phosphorus in soil is mainly due to chemical precipitation and specific adsorption. Chemical precipitation refers to the interaction between phosphorus and Fe in the soil. 3+ 、Al 3+ , Ca 2+ Plasma forms insoluble compounds; obligate adsorption refers to the ligand exchange between phosphate anions as ligands and soil colloids, which are bound to the colloid surface by covalent bonds or coordination bonds. Both of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
Inventor 苏群孙磊刘平平刘宝德
Owner SHANDONG BAOYUAN BIOTECH CO LTD
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