Organic environmentally-friendly soil conditioner for improving acidified or acid soil

A technology of soil conditioner and acidic soil, applied in the field of organic environment-friendly soil conditioner and its preparation

Active Publication Date: 2012-01-18
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of using fly ash, alkali slag or urban sludge and other industrial wastes that may cause soil heavy metal poisoning as raw materials in the existing soil conditioner preparat

Method used

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  • Organic environmentally-friendly soil conditioner for improving acidified or acid soil
  • Organic environmentally-friendly soil conditioner for improving acidified or acid soil
  • Organic environmentally-friendly soil conditioner for improving acidified or acid soil

Examples

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preparation example Construction

[0025] The preparation method of the organic environment-friendly soil conditioner of improving acidification or acid soil according to the present invention, the steps are as follows:

[0026] (1) Biogas residue pretreatment: the biogas residue with animal manure and straw as the main raw material is separated from solid and liquid to obtain biogas residue with a water content of 50wt% to 60wt%, and then air-dried or dried to obtain a water content of less than 30wt% biogas residue; shear and crush the biogas residue to a fineness of 0.5-1 mm;

[0027] (2) Pretreatment of shell powder: Rinse natural scallop shells, oyster shells, green clam shells, carved clam shells, meretrix meretrix shells or mixed shells with clean water, dry them to constant weight, place them in a kiln, and heat Carry out high-temperature calcination at 900-1000°C for 30-60 minutes, cool down to room temperature, then grind and pass through a 200-mesh sieve to obtain shell powder;

[0028] (3) Add the ...

specific Embodiment approach

[0055] Below in conjunction with embodiment, the present invention will be further described, what is not described in detail in the embodiment is all by the prior art in this area, and the raw material used in the embodiment is as follows:

[0056] Calcium magnesium phosphate fertilizer is available from Fuquan Phosphate Fertilizer Factory in Guizhou Province; chitosan, deacetylation degree > 80%, is available from Jinan Haidebei Marine Bioengineering Co., Ltd.; plant ash is from Guoneng Gaotang Biological Power Plant; zeolite powder and bentonite , Xinyang City Pingqiao District Jinchuan Mining Flour Mill for sale. Other raw materials without special instructions are commercially available conventional products.

[0057] Examples The solid-liquid separator used in the preparation method is a Hansen brand LX 280-2 spiral solid-liquid separator, available from Zibo Hansen Machinery Co., Ltd. The biogas residue is sheared and pulverized using a wet material pulverizer, which i...

Embodiment 1

[0059] Embodiment 1: organic environment-friendly type soil conditioner, raw material component is as follows:

[0060] Biogas residue 24.3kg; shell powder 23kg; calcium magnesium phosphate fertilizer 18.5kg; plant ash 20kg; chitosan 0.2kg; zeolite powder 6kg; bentonite 8kg.

[0061] The preparation steps are as follows:

[0062] (1) Biogas residue pretreatment: the biogas residue with animal manure and straw as the main raw material is separated from solid and liquid, and then air-dried or dried to obtain biogas residue with a water content of 25wt%; shear and pulverize the biogas residue to fineness 0.8mm;

[0063] (2) Pretreatment of shell powder: Rinse natural scallop shells, oyster shells, green clam shells, carved clam shells, meretrix meretrix shells or mixed shells with clean water, dry them to constant weight, place them in a kiln, and heat Carry out high-temperature calcination at 960-980°C for 40-50 minutes, lower to room temperature, then grind, pass through a 20...

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Abstract

The invention relates to an organic environmentally-friendly soil conditioner for improving acidified or acid soil and a preparation method thereof. The soil conditioner is prepared from the following raw materials in parts by weight: 23-46 parts of biogas residue, 14-24 parts of shell powder, 16-25 parts of calcium magnesium phosphate fertilizer, 13-20 parts of plant ash, 0.1-0.2 part of chitosan, 5-7 parts of zeolite powder and 6-9 parts of bentonite. The soil conditioner is prepared through pretreatment of the biogas residue, pretreatment of the shell powder and the like; through the produced soil conditioner, the pH value of soil can be increased; nutritive elements such as calcium, magnesium, phosphorus, potassium and the like in the soil are increased; the organic matter content in the soil is increased; the water retention and fertilizer retention capacity of the soil is improved; the physicochemical property of the soil is improved; the antiretroviral (diseases, pests, drought and the like) capacity of crops is improved; heavy metal poison is reduced; and the soil conditioner is convenient to apply, is not influenced by wind power and is suitable for mechanical working.

Description

technical field [0001] The invention relates to an organic environment-friendly soil conditioner for improving acidified or acidic soil and a preparation method thereof, belonging to the technical fields of solid waste recycling and agricultural production. Background technique [0002] Due to the influence of soil parent material, planting mode, fertilization, climate and other factors, there are currently about 200 million hectares of acidic soil in China. Most acidic soils have a pH of less than 5.5, and some are even lower. The total soil area of ​​Shandong Province is 12.11 million hectares, and the area of ​​acid brown soil is 1.7062 million hectares. Especially in Shandong Jiaodong area, the pH value of some orchard soils even reaches 4.5, which seriously affects the growth of fruit trees. In protected vegetable production, due to years of continuous cropping and excessive application of chemical fertilizers, soil acidification has become increasingly serious, which ...

Claims

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Application Information

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IPC IPC(8): C09K17/40
Inventor 张玉凤董亮刘兆辉杨果陈广思
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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