Method for improving acid soil using ground mass

A technology of acidic soil and matrix, which is applied in the field of improving acidic soil and its physical properties and increasing soil fertility. It can solve the problems of not improving other physical properties of soil, changing soil acidity, and non-renewable resources. It achieves low cost, Increased soil water holding capacity, ease of processing, and labor-saving effects

Inactive Publication Date: 2008-11-19
RES INST OF TROPICAL ECO AGRI SCI YUNAN ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention overcomes lime, calcium-containing shell ash, purple shale powder, fly ash, plant ash, etc. to neutralize active acid, latent acid, and improve soil structure in the prior art, but there are problems such as labor-saving processing, high cost, and resource Non-renewable, while changing the acidity of the soil, it will also increase the adverse consequences such as soil compaction, and other physical properties of the soil cannot be improved.

Method used

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  • Method for improving acid soil using ground mass

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Effect test

Embodiment 1

[0036] Implementation location: National Agricultural Cultivated Land and Paddy Field Protection Demonstration Zone in Yuanmou County, Yunnan Province (Location: Chemical Wastewater Discharge Outlet of Yuanmou County), with a soil area of ​​100 mu. This area belongs to the tropical climate with hot and dry climate. Specific steps are as follows:

[0037] 1. Matrix production

[0038] Cut and dry King Grass in the sun, use a grass powder machine to crush the dried King Grass into grass powder, add Dadiwang live bacteria stock solution purchased in the market and urea with 46% nitrogen in the grass powder; according to grass powder: Dadiwang Live bacteria stock solution: urea in a ratio of 200:1:1. After mixing evenly, add clear water and mix well. Just knead it with wet hands. Pile it into a round table shape with a height of 40--50cm. After compacting, cover and seal it with a woven bag. Strictly, after 15 days of natural fermentation, stir again, and ferment for 10±1 days to...

Embodiment 2

[0056] Implementation location: Rain-fed dry slope land comprehensive utilization area in Yuanmou County, Yunnan Province, with a soil area of ​​15 mu. This area belongs to the hot and dry climate of the tropics. Specific steps are as follows:

[0057] 1. The matrix production is the same as in Example 1.

[0058] 2. pH measurement

[0059] The substrate pH was still 10. Use pH test paper to measure the soil to be improved, and its pH value is 5.5-6.5. Plow the topsoil of the plow layer, remove weeds exposed to the sun, and use it when the rainy season comes.

[0060] 3. Determination of substrate dosage

[0061] The surface soil area of ​​the dry land is randomly selected to be 100×100cm 2 , the soil at a depth of 20 cm in the soil layer, quantitatively determine the amount of substrate that needs to neutralize the acidic soil according to a small amount of 1 / 5 of the soil volume. When the pH value of the neutralized soil is 7, the neutralized randomly selected 1m 2 The...

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Abstract

The invention discloses a method for improving the acid soil condition by using a matrix and belongs to the technology field of the soil improvement. The method is composed of seven steps including matrix preparation, pH value measurement, matrix amount confirmation, matrix applying time, soil humidity control, matrix applying operation and pre-plant soil preparation. The matrix is made from imperatoria and prepared by adopting the technological processes of drying, chopping, fermenting by using the Dadiwang viable bacteria stock solution, etc., wherein the imperatoria is suitable for being planted in the tropical area, and has rapid growth, high yield and sustainability, and the required matrix total amount of the soil improvement can be figured out by confirming the required matrix amount of neutralizing 1m<2> of the acid soil. The matrix is quantificationally mixed with the acid soil for more than two times. The method can effectively change the pH value and the physical behavior of the soil and can increase the soil fertility; the pH value of the soil can be directly increased from 4-6 to 6-8, so that the acidity and basicity of the soil is suitable for the plant growth; the soil bulk density is reduced by 10%, the soil porosity is increased by more than 15%, and the water holding capacity of the soil is increased by more than 20%.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a method for improving acidic soil and its physical properties and increasing soil fertility. Background technique [0002] With the emission of automobile exhaust and industrial sulfur dioxide, air pollution is caused, and the acid rain formed causes soil compaction, which is highly acidic, difficult for plant growth, and even causes plant death. The impact of soil pH on nutrient availability is mainly manifested in the following points: [0003] 1. Within the normal range, the reason why plants are sensitive to soil acidity and alkalinity is that the pH value of the soil affects the concentration of various ions in the soil solution, which affects the availability of various elements to plants; [0004] 2. The influence of soil acidity and alkalinity on the availability of nutrients: [0005] (1) Nitrogen is more effective at pH 6-8, because when the pH value is less...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00C09K17/00
Inventor 张明忠沙毓沧袁理春金杰史亮涛冯光恒龙会英江功武韩学琴张映翠朱红业杨洪祥
Owner RES INST OF TROPICAL ECO AGRI SCI YUNAN ACAD OF AGRI SCI
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