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A kind of effective method of refractory phosphorus

A technology of insoluble phosphorus and phosphorus, which is applied in the field of phosphorus effectiveness, can solve the problems of low phosphorus utilization rate and high phosphorus recovery cost, and achieve the effect of improving phosphorus problem and increasing content

Active Publication Date: 2021-11-30
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low utilization rate of phosphorus in the existing soil, high cost of phosphorus recovery, and difficulty in widespread promotion, and to provide a method for making insoluble phosphorus effective

Method used

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  • A kind of effective method of refractory phosphorus
  • A kind of effective method of refractory phosphorus
  • A kind of effective method of refractory phosphorus

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Experimental program
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specific Embodiment approach 1

[0029] Specific implementation mode one: this implementation mode is a method for making insoluble phosphorus effective, and it is completed according to the following steps:

[0030] 1. Prepare the reaction mixture:

[0031] Mix glucose or biomass material powder with insoluble phosphorus raw materials, then add alkaline additives and distilled water, and stir evenly to obtain a mixture reaction solution;

[0032] The mass ratio of glucose, insoluble phosphorus raw material, alkaline additive and distilled water described in step 1 is (3~6):(0.8~2.5):(0.3~1):(20~80);

[0033] The mass ratio of biomass material powder, insoluble phosphorus raw material, alkaline additive and distilled water described in step 1 is (3~6):(0.8~2.5):(0.3~1):(20~80);

[0034] The biomass material powder described in step 1 is prepared according to the following steps:

[0035] First, the biomass material is cleaned to remove impurities on the surface of the biomass material, then dried, and final...

specific Embodiment approach 2

[0044]Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, distilled water is used to clean the biomass material 3 to 8 times to remove impurities on the surface of the biomass material, and then the biomass material is cleaned at a temperature of 60°C to 80°C. Dry at ℃ for 10h ~ 24h. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0045] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the particle size of the biomass material powder in step 1 is 100 mesh to 200 mesh. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for making available insoluble phosphorus, which relates to a method for making available phosphorus. The purpose of the invention is to solve the problems of low utilization rate of phosphorus in the existing soil, high cost of phosphorus recovery and difficulty in widespread popularization. Method: 1. Mix glucose or biomass material powder with insoluble phosphorus raw materials, then add alkaline additives and distilled water, and stir evenly to obtain a mixture reaction solution; 2. Transfer the mixture reaction solution to a high-temperature and high-pressure hydrothermal reaction kettle The hydrothermal reaction is carried out to obtain a compound phosphate fertilizer, which is to complete a method for making insoluble phosphorus effective. The compound phosphate fertilizer formed by activation of the invention has a soluble phosphorus concentration of 10.0-4000 mg / L, an available phosphorus concentration of 5.0-3500 mg / L, and a contained humus concentration of 0.1-1.0 mg / g. The compound phosphate fertilizer prepared by the invention is used to quickly replenish the available phosphorus content in soil and promote plant growth.

Description

technical field [0001] The present invention relates to a method for making phosphorus effective. Background technique [0002] Phosphorus is one of the indispensable nutrient elements for crop growth. Its content and availability in the soil determine the final agricultural productivity. Phosphorus is a non-renewable resource that hardly exists in the form of gas compounds in nature. It is of great significance to make full and rational use of existing phosphorus resources, maintain phosphorus cycle balance and sustainable agricultural development. Available phosphorus is the main bottleneck restricting the growth of crops in terrestrial ecosystems, and the addition of phosphorus fertilizers improves the primary productivity of grain. Globally, about 180 metric tons of minerals are mined every year, and 50% of the world's resources are mined in only one country, Morocco. On the other hand, phosphates are very common, almost ubiquitous minerals with about 50 to 1500 mg / kg ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
CPCC05B7/00C05B17/00C05F1/005C05F11/00
Inventor 杨帆
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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