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Method for preparing southern dry land acidic soil conditioner

A technology of acidic soil and conditioner, which is applied in the field of soil agricultural chemistry, can solve the problems that have not yet been seen in the patent literature and reports of the preparation method of acidic soil conditioner in the southern dry land, destroy the permeability of plant plasma membrane, and soil compaction, etc., to increase the diversity of microorganisms performance, reduce water leakage and fertilizer leakage, and prevent soil compaction

Active Publication Date: 2007-12-12
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When planting crops in acidic soil in drylands in the south, the acidic soil will destroy the permeability of the plasma membrane in the plant, resulting in reduced absorption of trace elements calcium, magnesium, potassium and other elements by crops. At present, the commonly used method is to use lime to improve acidic soil However, long-term or large-scale use of lime will cause soil compaction, and it will also cause imbalances in the balance of calcium, magnesium, potassium and other elements in the soil, resulting in crop yield reduction
There are no patent documents and reports on the preparation method of the acidic soil amendment in the southern drylands

Method used

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  • Method for preparing southern dry land acidic soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix 83% shells, 16% coal, 0.5% rice stalks and 0.5% rice husks and put them into the shaft kiln for high-temperature calcination, and perform forced ventilation if necessary. The temperature is controlled at 1100°C, calcined for 8 hours, and the shaft kiln is operated with semi-open flame operation. After the calcination, it was forced to ventilate and cooled to room temperature (20-30° C.) for 9 hours, and finally the calcined product was obtained.

[0022] (2) Transfer the calcined product into the reaction tank, add 45% water of the mass of the calcined product to fully react, stack and mature the reaction product for 5 days, and finally obtain the calcined shell product.

[0023] (3) Fully mix 45% calcined shell products, 30% calcium magnesium silicate and 25% ammonium magnesium phosphate to obtain a mixed material.

[0024] (4) Pulverize the mixed material, sieve and sieve (φ1mm), and finally mix to obtain the product of the present invention, the southern upl...

Embodiment 2

[0026] (1) Mix 89% shells, 9% coal, 1% rice straw and 1% rice husk and put them into the vertical kiln for high-temperature calcination, and perform forced ventilation if necessary. The temperature is controlled at 800°C, calcined for 15 hours, and the vertical kiln operation adopts the semi-open flame operation method. After the calcination, the forced ventilation was cooled to room temperature for 6 hours, and finally the calcined product was obtained.

[0027] (2) Transfer the calcined product into the reaction tank, add 52% water of the mass of the calcined product to fully react, stack and mature the reaction product for 8 days, and finally obtain the calcined shell product.

[0028] (3) Fully mix 62% calcined shell products, 15% calcium magnesium silicate and 23% ammonium magnesium phosphate to obtain a mixed material.

[0029] (4) Pulverize the mixed material, sieve and sieve (φ1mm), and finally mix to obtain the product of the present invention, the southern upland ac...

Embodiment 3

[0031] (1) Mix 90% shells, 9.4% coal, 0.3% rice stalks and 0.3% rice husks and put them into the vertical kiln for high-temperature calcination, and perform forced ventilation if necessary. The temperature is controlled at 900°C, calcined for 13 hours, and the vertical kiln operation adopts the semi-open flame operation method. After the calcination, it was forced to ventilate and cooled to room temperature for 7 hours, and finally the calcined product was obtained.

[0032] (2) Transfer the calcined product into the reaction tank, add 65% water of the mass of the calcined product to fully react, stack and mature the reaction product for 10 days, and finally obtain the calcined shell product.

[0033] (3) Fully mix 57% calcined shell products, 15% calcium magnesium silicate and 28% ammonium magnesium phosphate to obtain a mixed material.

[0034] (4) Pulverize the mixed material, sieve and sieve (φ1mm), and finally mix to obtain the product of the present invention, the south...

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Abstract

The invention discloses a method for preparing soil amendment for southern dry and acid soil. It comprises following steps: mixing calcinated shell product of 40- 64% (proportion by weight), calcium magnesium silicate of 15- 30% and ammoniomagnesium phosphate of 10- 28%, getting mixed material; disintegrating mixed material, sifting, and getting soil amendment. The product can improve cluster structure for soil, reduce water loss and fertilizer loss problem in southern dry and acid soil, prevent soil consolidation; it can moderate the pH value for southern dry and scid soil, neutralizing free acid, inactivating the activity of active aluminium, improve microenvironment for root soil and increase microbe diversity in southern sry and acid soil, increase the enzyme functions, improve nutrition supply of magnesium and calcium and other microelement, and provides good basis for high crop productivity.

Description

technical field [0001] The invention belongs to the field of soil agricultural chemistry, and particularly relates to a preparation method of an acidic soil conditioner for dry land in southern China. Background technique [0002] The main types of acidic soil in southern dry land are brick red soil, red red soil, red soil, and yellow red soil. The yield rate is lower. This type of soil is widely distributed as agricultural land, with a large area, rich resources and great production potential. Through the application of various agricultural technologies and products to improve and fertilize, it can become an important production base for the development of economic crops, forest trees, and fruit trees in the south subtropical zone. [0003] When planting crops in acidic soil in drylands in the south, the acidic soil will destroy the permeability of the plasma membrane in the plant, resulting in reduced absorption of trace elements calcium, magnes...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K109/00
Inventor 徐培智解开治杨少海陈建生唐栓虎张发宝黄旭赵记军严超
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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