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Preparation method of high-efficiency phosphorus-containing product and application thereof

A product and high-efficiency technology, applied in the agricultural field, can solve the problems such as the disappearance of phosphorus activation effect and the insignificant effect of phosphorus fertilizer, and achieve the effect of improving effectiveness

Inactive Publication Date: 2019-08-23
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have certain effects, they also have deficiencies. For example, the effect of increasing the phosphorus fertilizer by changing the particle size of the phosphorus fertilizer is not significant; although adding organic acids such as citric acid to the soil can increase the available phosphorus level in the soil, but with the increase of the organic acid Decomposition of mineralization, the activation effect on phosphorus gradually disappears

Method used

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  • Preparation method of high-efficiency phosphorus-containing product and application thereof
  • Preparation method of high-efficiency phosphorus-containing product and application thereof
  • Preparation method of high-efficiency phosphorus-containing product and application thereof

Examples

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preparation example Construction

[0028] A method for preparing a high-efficiency phosphorus-containing product, comprising the following steps: using the product of agricultural waste pyrolysis in an anaerobic environment at 600-700°C as biochar; using phosphate fertilizer, biochar, and sulfur powder according to the mass ratio (90-70) :(5~15):(5~15) fully mix to obtain the phosphate fertilizer mixed material; then spray 20~35L of 1.0%~1.5% polyacrylamide solution in every 1000 kg of phosphate fertilizer mixed material, fully stir and dry A high-efficiency phosphorus-containing product can be obtained, which can improve the utilization rate of phosphorus.

[0029] The phosphate fertilizer is a general commercial phosphate fertilizer, such as ordinary calcium, heavy calcium or diammonium phosphate.

[0030] The biochar is produced by anaerobic pyrolysis of agricultural waste apple branches at a high temperature of 600 degrees. The particle size is 0.10-0.15 mm. The biochar has a large surface area and rich fun...

Embodiment 1

[0039] Adding sulfur powder and biochar to the promotion effect of available phosphorus in the phosphate fertilizer of embodiment 1

[0040] (1) The effect of adding sulfur powder to increase the content of available phosphorus

[0041]Phosphorus fertilizer is transformed in the soil after it is applied to the soil, and its effectiveness can be expressed by soil available phosphorus. Adding sulfur powder alone to the phosphate fertilizer and applying it to the soil (the initial phosphorus level is uniformly 150mg / kg) can increase the available phosphorus content in the soil (see figure 1 ), and with the increase of sulfur powder addition, the available phosphorus content showed an upward trend. Compared with the control (without adding sulfur powder), the available phosphorus increased by an average of 7.95% when it was applied to the soil for 60 days, and the treatment with an addition ratio of 15% increased by 8.75%; The ratio is 15% an increase of 9.05%.

[0042] (2) The...

Embodiment 2

[0051] Effect of adding sulfur powder and biochar to microbial phosphorus in the phosphate fertilizer of embodiment 2

[0052] (1) The effect of adding sulfur powder to phosphate fertilizer to increase the phosphorus content of microorganisms

[0053] The addition of sulfur powder is to further increase the content of soil microbial phosphorus by increasing soil sulfur bacteria. Adding different proportions of sulfur powder alone can increase the content of soil microbial phosphorus (see Figure 6 ), and with the increase in the proportion of sulfur powder added, the microbial phosphorus content showed an upward trend. When applied to the soil for 60 days, the average increase was 8.06%, and for 150 days, the average increase was 7.62%, and the increase was the largest when the proportion of sulfur powder was 15%, which increased by 8.87% and 9.05% at 60d and 150d, respectively.

[0054] (2) The effect of adding biochar to phosphate fertilizer to increase the phosphorus cont...

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Abstract

The invention discloses a preparation method of a high-efficiency phosphorus-containing product and an application thereof. The method comprises the following steps: using cracking products of agricultural wastes at a 600-700 DEG C anaerobic environment as biochar, fully mixing a phosphate fertilizer, the biochar and sulfur powder according to the mass ratio of (90-70):(5-15):(5-15) to obtain a phosphate fertilizer mixed material, spraying 20-35 L of a 1.0%-1.5% polyacrylamide solution per 1000 kg of the phosphate fertilizer mixed material, and performing fully stirring and airing to obtain the high-efficiency phosphorus-containing product. Based on the biomass carbon and the sulfur powder as main phosphorus adsorption and activation materials, the biomass carbon and the sulfur powder arefurther compounded with the phosphate fertilizer through polyacrylamide, and thus the effectiveness of the phosphate fertilizer in soil, especially northern calcareous soil and saline-alkaline soil, is improved.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and relates to a preparation method of a high-efficiency phosphorus-containing product and its application, in particular, to a preparation method of a high-efficiency phosphorus-containing product using a biochar composite material and its application. Background technique [0002] The total phosphorus content of soil in my country is 0.31-1.72g·kg -1 Between, the average is 0.68g·kg -1 , the soil phosphorus content is relatively low. In the 1980s, the survey found that the available phosphorus content in my country's soil was 0.1-228.8 mg·kg -1 , the average value is only 12.89mg·kg -1 , the available phosphorus content in most soils is 10mg·kg -1 Below, can not meet the needs of crops for phosphorus. The application of phosphorus fertilizer is a common phenomenon in our country, and a large amount of phosphorus fertilizer is applied every year, and phosphorus (P 2 o 5 ) most reached...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05G3/80
Inventor 王旭东张育林谭艳茹刘娜
Owner NORTHWEST A & F UNIV
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