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Prescription and preparation method of acidified soil conditioner

A soil conditioner and formula technology, applied in chemical instruments and methods, soil conditioning materials, other chemical processes, etc., can solve problems such as environmental pollution and waste of resources, and achieve the effects of improving economic benefits, saving resources and protecting the environment

Inactive Publication Date: 2011-04-06
QINGDAO AGRI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to make acidified soil improver by mixing the discarded activated clay, soybean meal and other vegetable oil wastes produced in the process of refining and purifying vegetable oil with potassium hydroxide solution, so as to solve the problems of existing old orchards and old vegetable gardens due to the continuous use of chemical fertilizers. Soil acidification caused by fertilizers and other types of acidification problems, to avoid the waste of resources and pollution to the environment after waste activated clay is buried

Method used

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  • Prescription and preparation method of acidified soil conditioner
  • Prescription and preparation method of acidified soil conditioner

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preparation example Construction

[0019] The preparation method of acidified soil conditioner provided by the present invention comprises the following steps:

[0020] (1) Mixing with alkali: stir and mix waste activated clay and / or soybean meal with 5% to 50% potassium hydroxide solution in a ratio of 3 to 8:1, so that the pH value of the material is between 8 and 12 to obtain a viscous Viscous material.

[0021] Potassium hydroxide can also be replaced by alkaline substances such as sodium hydroxide, calcium hydroxide, aminoethanol, etc., but sodium hydroxide is easy to cause the accumulation of sodium ions in the soil, which is not good for plant growth; calcium hydroxide has low reactivity, and the production process is cumbersome ; The price of aminoethanol is more expensive, and the product cost is increased.

[0022] (2) Reaction activation: Indirectly heat the viscous material obtained in step (1) to 80-120°C and stir for 4-10 hours to completely degrade the protein and phospholipids contained in the ...

example 2

[0028] Example 2: After a two-year preliminary test in 2007-2008, an improvement test for a growing season was carried out in Wendeng City and Mengyin County in 2009. As a result, the pH value of the Wendeng orchard soil increased to 6.1, which was 0.7 higher than that of the control, and that of the Mengyin County orchard soil was raised to 5.8, which was 0.43 higher than that of the control; -1 and 187.07mg·kg -1 , reaching the first level; available phosphorus content is 63.59mg·kg -1 and 40.42mg·kg -1 Reached the first level; the content of available potassium is 132.91mg·kg -1 and 138.36mg·kg -1 , up to level three. The content of soil microorganisms and enzymes has been significantly improved (see attached table 1 and 2 for specific figures).

[0029] Table 1 Classification standard of soil nutrient content in the second national soil census

[0030]

[0031] Table 2 Effects of applying acidification amendments on soil microorganisms and enzyme content

[0032]...

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Abstract

The invention belongs to the field of soil conditioning methods, in particular to a prescription and preparation method of an acidified soil conditioner. The method comprises the following steps of: proportionally stirring and mixing vegetable oil waste, such as waste activated clay, soybean meal and the like, with a potassium hydroxide solution, and regulating the pH value of the materials to be 8-12; then, indirectly heating and stirring the obtained materials to obtain an organic and inorganic alkaline mixture; and finally, dewatering and drying the obtained mixture to obtain organic and inorganic mixed soil conditioner powder. By means of the acidified soil conditioner provided by the invention, the soil acidification problem and other types of acidification problems caused by using chemical fertilizers in old orchards and old vegetable gardens for years are effectively solved, and the situations of resource waste and environment pollution due to the landfill of the waste activated clay are avoided.

Description

technical field [0001] The invention belongs to the field of soil improvement methods, and in particular relates to a formula of an improver for improving acidified soil by using waste activated clay, soybean meal, etc. produced in the process of refining and purifying vegetable oil and potassium hydroxide solution and a preparation method thereof. Background technique [0002] Due to inappropriate management measures such as fertilization, the soil in the old orchards in the north has gradually become acidified in recent years. Among the 312 old orchard soil samples collected from main fruit tree planting areas in Shandong Province (except the fluvo-aquic soil area in northern Shandong) from 2008 to 2010, 69.87% of the soil samples had a pH value less than 5.5. The organic matter content is only 0.87%-1.52%, the soil ecology is destroyed, and the microbial and enzyme content is significantly reduced. Soil acidification has led to many problems such as weak tree vigor, seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K109/00C09K101/00
Inventor 原永兵刘成连李庆军
Owner QINGDAO AGRI UNIV
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