Soil conditioner for controlling soil phosphorus loss and its preparation method and application

The technology of soil conditioner and soil phosphorus is applied in the field of soil conditioner for controlling soil phosphorus loss and its preparation, so as to achieve the effects of improving water status, improving soil structure and enriching active sites.

Active Publication Date: 2021-03-23
江西省·中国科学院庐山植物园
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the prevention and control of P in protected agricultural soil and sloping cultivated land has not been reported yet, and the research on the selective application of different soil amendments for different runoff and rainwater erosion times, different intensities of runoff erosion, and different soil types has not yet been reported. rare

Method used

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  • Soil conditioner for controlling soil phosphorus loss and its preparation method and application
  • Soil conditioner for controlling soil phosphorus loss and its preparation method and application
  • Soil conditioner for controlling soil phosphorus loss and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The soil conditioner of this embodiment includes the following raw materials in parts by weight: 80 parts of porous carbon base, 25 parts of ferrous sulfate, 5 parts of aluminum sulfate, 10 parts of polyacrylamide, and 45 parts of modified loofah.

[0028] The porous carbon-based preparation method is as follows:

[0029]Crush peanut shells through a 200-mesh sieve, soak the obtained powder in a phosphoric acid solution with a temperature of 80°C and a mass concentration of 75% for 40 hours, filter, and calcinate for 3 hours at a temperature of 700-760°C, take it out and place it in a normal temperature Soak in a hydrochloric acid solution with a hydrogen chloride mass concentration of 18% for 24 hours, filter, deionize and wash to pH=6.5-7.5, then add a 20w% sodium bicarbonate solution, and then carbonize in a nitrogen environment at 500-550°C 4h, cooled, taken out, and crushed to obtain a porous carbon base.

[0030] The preparation method of modified loofah is as fo...

Embodiment 2

[0038] The soil conditioner of this embodiment includes the following raw materials in parts by weight: 85 parts of porous carbon base, 30 parts of ferrous sulfate, 0 parts of aluminum sulfate, 10 parts of polyacrylamide, and 50 parts of modified loofah.

[0039] The porous carbon-based preparation method is as follows:

[0040] Crush peanut shells through a 200-mesh sieve, soak the obtained powder in a phosphoric acid solution with a temperature of 80°C and a mass concentration of 75% for 45 hours, filter, and calcinate for 3 hours at a temperature of 650-700°C, take it out and place it in a normal temperature Soak in hydrochloric acid solution with a hydrogen chloride mass concentration of 18% for 24 hours, filter, deionize and wash to pH=6.5-7.5, then add potassium bicarbonate solution with a concentration of 20w%, and then carbonize in a nitrogen environment at 500-550°C 4h, cooled, taken out, and crushed to obtain a porous carbon base.

[0041] The preparation method of ...

Embodiment 3

[0049] The soil conditioner of this embodiment includes the following raw materials in parts by weight: 90 parts of porous carbon base, 35 parts of ferrous sulfate, 10 parts of aluminum sulfate, 15 parts of polyacrylamide, and 50 parts of modified loofah.

[0050] The porous carbon-based preparation method is as follows:

[0051] Crush peanut shells through a 200-mesh sieve, soak the obtained powder in a phosphoric acid solution with a temperature of 80°C and a mass concentration of 75% for 45 hours, filter, and calcinate for 3 hours at a temperature of 710-760°C, take it out and place it in a normal temperature Soak in hydrochloric acid solution with a hydrogen chloride mass concentration of 18% for 24 hours, filter, deionize and wash to pH = 6.5-7.5, then add calcium bicarbonate solution with a concentration of 20w%, and then place it in a nitrogen environment at 500-550°C for carbonization 4h, cooled, taken out, and crushed to obtain a porous carbon base.

[0052] The prep...

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Abstract

The invention belongs to the technical field of soil restoration, and especially relates to a soil conditioner used for controlling soil phosphorus element loss, and a preparation method and applications thereof. The soil conditioner used for controlling soil phosphorus element loss comprises following raw materials: 80 to 100 parts of a porous carbon base, 30 to 50 parts of ferrous sulfate, 25 to40 parts of aluminum sulfate, 10 to 20 parts of polyacrylamide, and 45 to 60 parts of modified loofah sponge; the porous carbon base is prepared through immersion of peanut shell powder in a phosphoric acid solution, a hydrochloric acid solution, and a bicarbonate solution successively under oxygen-free conditions; the modified loofah sponge is prepared through loofah sponge oxidation pretreatment, and plasma treatment and microwave intermittent radiation treatment. The soil conditioner is excellent in phosphorus loss controlling effect, is capable of reducing discharge of soil phosphorus element into water body, increasing soil effective phosphorus, reducing fertilizer cost of farmers, and can be used for soil restoration of slope cropland.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil improver for controlling soil phosphorus loss, a preparation method and application thereof. Background technique [0002] At present, agricultural non-point source pollution has become one of the most difficult problems faced by environmental protection scholars and managers in the world. Among them, excessive input of N and P substances is one of the main causes of agricultural non-point source pollution. There are two main sources of agricultural non-point source pollution caused by N and P nutrients. One is that the soil itself contains a lot of N, P and other nutrients. N and P accumulate in the soil. These soils containing N and P nutrients will lose nutrients under the dissolution and erosion of runoff, especially in slope farmland covered by vegetation, N, P and other nutrients are easily eluted by runoff and entrained into receiving water bodies. With t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 姬红利詹选怀吴永红方炎明张洋
Owner 江西省·中国科学院庐山植物园
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