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Weathered coal soil salinization modifying agent and preparation method thereof

A technology of improver and weathered coal, applied in the direction of alkaline orthophosphate fertilizer, application, organic fertilizer, etc., can solve the problem of not providing the application amount, etc., to overcome the shortage of medium and trace elements, and reduce the degree of alkalization , the effect of increasing the content of organic matter

Inactive Publication Date: 2011-05-11
INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention contains 40%-59% moisture and does not provide the application amount per unit area

Method used

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  • Weathered coal soil salinization modifying agent and preparation method thereof
  • Weathered coal soil salinization modifying agent and preparation method thereof
  • Weathered coal soil salinization modifying agent and preparation method thereof

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preparation example Construction

[0012] The preparation method of soil salinity improver of the present invention, step is as follows:

[0013] (1) Grind the dry weathered coal, pass through a 60-mesh sieve, weigh 55-65 parts, add it to the reaction chamber, and add the dilute Add nitric acid while stirring, fully stir evenly, seal the reaction chamber, and place it at room temperature for 12-24 hours to obtain weathered coal containing nitro humic acid.

[0014] (2) Weigh 10-12 parts of powdered monoammonium phosphate, add it to the reaction chamber described in step (1), stir evenly while adding, seal the reaction chamber, and place it at room temperature for aging for 12-24 hours. Then dry and pulverize the materials in the reaction chamber, pass through a 40-mesh sieve, and put them into the disc granulator.

[0015] (3) Grind urea, ferrous sulfate, zinc sulfate, manganese sulfate and calcium binder respectively, pass through a 40-mesh sieve, weigh 2-6 parts of urea, 2-6 parts of ferrous sulfate, and 1-4...

Embodiment 1

[0046] Embodiment 1. Soil salinity improver, raw material parts by weight form as follows:

[0047] 57 parts of weathered coal, 10 parts of monoammonium phosphate, 5 parts of urea, 6 parts of ferrous sulfate, 4 parts of zinc sulfate, 3 parts of manganese sulfate, and 15 parts of calcium binder. Prepare 17-23 parts of nitric acid with a concentration of 20% in mass percent in addition.

[0048] The recommended application rate is 40-50 kg per mu, mainly for mild-moderate saline-alkali land.

[0049] Preparation:

[0050] (1) Pulverize the dry weathered coal, pass through a 60-mesh sieve, weigh 57 parts, add it to the reaction chamber, add dilute nitric acid with a mass percentage concentration of 20% according to the mass-volume ratio of 1:0.30-0.40, and stir while adding , stir well, seal the reaction chamber, and place it at room temperature for 12-24 hours to obtain weathered coal containing nitro humic acid.

[0051] (2) Weigh 10 parts of powdered monoammonium phosphate,...

Embodiment 2

[0054] Embodiment 2. Soil salinity improver, the composition of raw material parts by weight is as follows:

[0055] 61 parts of weathered coal, 12 parts of monoammonium phosphate, 5 parts of urea, 3 parts of ferrous sulfate, 2 parts of zinc sulfate, 2 parts of manganese sulfate, and 15 parts of calcium binder. Prepare 18-24 parts of nitric acid with a mass percent concentration of 20%.

[0056] The recommended application rate is 80-100 kg per mu, mainly for moderate-severe saline-alkali land.

[0057] Preparation:

[0058] (1) Pulverize the dry weathered coal, pass through a 60-mesh sieve, weigh 61 parts, add it to the reaction chamber, add dilute nitric acid with a mass percentage concentration of 20% according to the mass-volume ratio of 1:0.30-0.40, and stir while adding , stir well, seal the reaction chamber, and place it at room temperature for 12-24 hours to obtain weathered coal containing nitro humic acid.

[0059] (2) Weigh 12 parts of powdery monoammonium phosph...

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Abstract

The invention relates to a saline soil restoration material for weathered coal soil and a preparation method thereof. The restoration material consists of the following elements: weathered coal: 55 to 65 portions; monoammonium phosphate: 10 to 12 portions; carbamide: 2 to 6 portions; ferrous sulfate: 2 to 6 portions; zinc sulphate: 1 to 4 portions; manganous sulfate: 1 to 3 portions; calcareous adhesive: 5 to 15 portions and dilute nitric acid: 15 to 30 portions. The saline soil restoration material can be used as basic fertilizer or additional manuring. The saline soil restoration material for weathered coal soil can neutralize soil alkalinity, and the active calcium ion contained can replace the sodium ions absorbed on soil colloids which can be washed out of soil by rain water or irrigation water. The invention can raise the organic content in alkalization soil, make up for the insufficiency of the contents of the medium elements and trace elements in alkalization soil, and the active humic acid contained in the saline soil restoration material can promote plants to grow fast.

Description

technical field [0001] The invention belongs to a soil improver, in particular to a soil salinity improver and a preparation method thereof. Background technique [0002] Saline soil includes saline soil, alkaline soil, and different degrees of salinized and alkalized soil. China's current saline soil area is 35 million hectares, of which more than 10 million hectares of cultivated land are harmed by salinization. Due to different geographical regions, the characteristics of saline soils vary. Coastal saline soil is distributed in coastal areas, and has the characteristics of heavy salt content throughout the body, and the salt composition is dominated by chlorides. The saline soil in the Huang-Huai-Hai Plain is mostly distributed in the cultivated land in the form of patches. The surface concentration of salt is strong, and the salt content of the soil below the surface drops rapidly. Most of the saline soil in the Songnen Plain is soda-type, and the salt content of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05F11/02C05B7/00C05C9/00C05D9/02C05G3/80
Inventor 董晓霞杨果王学君李志禄刘兆辉郑东峰孙泽强
Owner INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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