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Method for controlling effectiveness of soil phosphorus

A soil phosphorus and availability technology, applied in the direction of soil preparation methods, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of loss, difficulty in absorbing effective phosphorus, etc., and achieve reduced emissions, good reaction effect, The effect of cost reduction

Pending Publication Date: 2022-06-21
JIANGSU AGRI ANIMAL HUSBANDRY VOCATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for controlling the availability of phosphorus in soil, which solves the problem that it is difficult for plants in the soil to absorb available phosphorus and the natural disasters caused by the loss of available phosphorus in the soil

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  • Method for controlling effectiveness of soil phosphorus

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Embodiment 1

[0024] The embodiment of the present invention provides a method for controlling the availability of soil phosphorus, which comprises the following composition by weight: 30 parts of peanut shells, 12 parts of ferrous sulfate, 12 parts of aluminum chloride, 10 parts of agarose, and 35 parts of modified loofah , the preparation steps are as follows:

[0025] Step 1: Crush the peanut shells, soak the obtained powder in a phosphoric acid solution at a temperature of 80°C for 20-36 hours, filter, and then carbonize at a temperature of 700°C for 3 hours, take them out to obtain carbonized peanut shells, and dilute sulfuric acid at room temperature Soak in the solution for 36 hours, then add it to the bicarbonate solution, then place it in an anaerobic environment at 500°C and heat it for 8 hours, take it out after cooling, and crush it to obtain the product. Small holes, good air permeability and water permeability, can greatly increase the air permeability and water permeability o...

Embodiment 2

[0034] A method for controlling soil phosphorus availability, comprising the following components by weight: 40 parts of peanut shells, 15 parts of ferrous sulfate, 13 parts of aluminum chloride, 15 parts of agarose, and 45 parts of modified loofah. The preparation steps are as follows:

[0035] Step 1: Crush the peanut shells, soak the obtained powder in a phosphoric acid solution at a temperature of 80°C for 20-36 hours, filter, then carbonize at a temperature of 700°C for 3 hours, take them out to obtain carbonized peanut shells, and soak them in a dilute sulfuric acid solution at room temperature Soak in the water for 36 hours, then add it to the bicarbonate solution, then place it in an oxygen-free environment at 500°C and heat it for 8 hours, take it out after cooling, and crush it to obtain the product;

[0036] Step 2: In an oxygen-free environment, mix ferrous sulfate and modified loofah, grind in the container for 10 minutes, then add agarose and continue grinding for...

Embodiment 3

[0044] A method for controlling soil phosphorus availability, comprising the following components by weight: 55 parts of peanut shells, 35 parts of ferrous sulfate, 15 parts of aluminum chloride, 20 parts of agarose, and 55 parts of modified loofah. The preparation steps are as follows:

[0045] Step 1: Crush the peanut shells, soak the obtained powder in a phosphoric acid solution at a temperature of 80°C for 20-36 hours, filter, and then carbonize at a temperature of 700°C for 3 hours, take them out to obtain carbonized peanut shells, and dilute sulfuric acid at room temperature Soak in the solution for 36 hours, then add it to the bicarbonate solution, then place it in an oxygen-free environment at 500°C and heat it for 8 hours, take it out after cooling, and crush it to obtain the product;

[0046] Step 2: In an oxygen-free environment, mix ferrous sulfate and modified loofah, grind in the container for 10 minutes, then add agarose and continue grinding for 30 minutes to fo...

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Abstract

The invention provides a method for controlling the effectiveness of soil phosphorus, which comprises the following substances by weight: 25-70 parts of peanut shell, 10-35 parts of ferrous sulfate, 10-15 parts of aluminum chloride, 10-20 parts of agarose and 30-60 parts of modified loofah sponge, and the method comprises the following steps: 1, crushing peanut shell, soaking in a phosphoric acid solution, filtering, calcining, taking out, soaking in a normal-temperature dilute sulfuric acid solution, adding into a bicarbonate solution, carbonizing, and drying to obtain the soil phosphorus; step 2, mixing ferrous sulfate with the modified loofah sponge, adding agarose into the mixture, and continuously grinding to generate a mixture; step 3, mixing the mixture with water, and stirring; step 4, filtering the mixture with filter paper, and drying the filtered mixture; and step 5, putting the dried mixture into a stirring container, and slowly stirring to obtain a finished product. The product is added while stirring, and the prepared solution can control the content of phosphorus in soil, reduce the discharge amount of phosphorus into a water body and control the effectiveness of phosphorus in soil.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a method for controlling soil phosphorus availability. Background technique [0002] The average phosphorus content in the earth’s crust is about 0.28% (calculated as phosphorus pentoxide), and the phosphorus content of most soils in my country (0-20cm topsoil) varies between 0.04% and 0.25%. Different soil types vary greatly. big. Generally speaking, the phosphorus content of soils in China shows a decreasing trend from north to south or from west to east. The sulfur content of brick red soil in South China is the lowest, and the black soil and chernozem in Northeast China and the chestnut soil in Inner Mongolia have the highest phosphorus content. The red and yellow soils in central China and the cinnamon and brown soils in North China are between the above two. The natural soil sulfur content depends on many factors, such as soil parent material type, organic matter c...

Claims

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Application Information

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IPC IPC(8): C09K17/40A01B79/00C09K101/00
CPCC09K17/40A01B79/00C09K2101/00
Inventor 韦庆翠张衡锋张成霞吴红魏欣
Owner JIANGSU AGRI ANIMAL HUSBANDRY VOCATIONAL COLLEGE
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