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Method for improving acidified soil

A soil acidification and waste technology, applied in the biological field of chemical combined restoration, physics, and soil acidification improvement, to achieve the effects of increasing diversity, enhancing the ability to absorb and store nutrients, and have a wide range of sources.

Active Publication Date: 2014-03-05
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Various raw materials are mixed evenly

Method used

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  • Method for improving acidified soil
  • Method for improving acidified soil
  • Method for improving acidified soil

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Soil acidification improvement in paddy fields, the specific steps are as follows:

[0019] 1. Site selection: For example, double-cropping rice field in winter in northern Hunan.

[0020] 2. Stockpile components: The stockpile components are: 35% of tea residue, 35% of cow dung, 8% of plant ash, 20% of milk vetch straw, 1% of vermiculite, and 1% of calcium magnesium phosphate fertilizer. Various raw materials are mixed evenly.

[0021] 3. Stacking: Interplant milk vetch before the late rice harvest in early October. After the late rice is harvested, choose when the ground is relatively moist but not waterlogged, and pile up tea dregs, cow dung, plant ash, etc. to form a mixture. The height of the pile should be about 80cm. After cutting part of the milk vetch stalks, cover the top of the pile with another layer to shade, so as to reduce the loss of water evaporation and ammonia volatilization. Stack it for about 5 days, turn it over once, add water according to the d...

Embodiment 2

[0028] Citrus orchard acidification soil improvement, the specific steps are as follows:

[0029] 1. Site selection: severely acidified citrus orchards.

[0030] 2. Stacking configuration: The stacking composition is: 45% of tea residue, 30% of cow dung, 8% of plant ash, 15% of peanut straw, 1% of vermiculite, and 1% of calcium magnesium phosphate fertilizer. Various raw materials are mixed evenly.

[0031] 3. Stacking: Plant peanuts in the open space under the citrus trees in April of that year. In June, mix and pile tea dregs, cow dung, and plant ash on the open space. After cutting the upper part of the peanuts, mix the straw into the mixture. 50-80cm, the top of the pile is covered with a layer of peanut straw to shade, so as to reduce the loss of water evaporation and ammonia volatilization. After stacking for about 10 days, turn it over once, add water according to the degree of dryness and wetness of the compost, stack it for about 20 days, then add water and turn it ...

Embodiment 3

[0038] Acidified soil improvement in corn fields, the specific steps are as follows:

[0039] 1. Site selection: corn field; between corn rows.

[0040] 2. Stacking configuration: The stacking composition is: 40% of tea residue, 30% of cow dung, 20% of plant ash, 8% of peanut straw, 1% of vermiculite, and 1% of calcium magnesium phosphate fertilizer. Various raw materials are mixed evenly.

[0041] 3. Stacking: plant peanuts among the corn rows in April of that year, and pile up tea dregs and cow dung between the corn rows in June, and mix the straw into the mixture after cutting the upper parts of the peanuts, which should be stacked high The top of the pile is covered with a layer of peanut stalks for shading, so as to reduce the loss of water evaporation and ammonia volatilization. Stack it for about 5 days, turn it over once, add water according to the degree of dryness and wetness of the compost, stack it for about 20 days, then add water and turn it once.

[0042] 4. ...

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Abstract

The invention discloses a method for improving acidified soil. The method uses soil animals and microorganisms in alkaline agricultural wastes for improving the acidified soil and is a physical, chemical and biological combined technology for repairing soil. The method uses tea leaf wastes composted in a slack farming land, dairy manures, plant ash and other alkaline agricultural wastes, has wide raw material source and low cost, is innocuous and nonpoisonous, and can avoid secondary damage of chemical repairing agents to the soil; the composting places are selected from spaces among crop lines, spaces under garden forests, winter fallow croplands and other slack farming lands, the agricultural wastes can be effectively treated, and the disadvantage that large floor space is occupied in the traditional composting is avoided, and repairing and production can be performed simultaneously; earthworms are added to accelerate decomposing of the agricultural wastes and solve the problem that the composting time is long in the traditional composting; the soil organism diversity is improved to be capable of effectively improving the activity of a soil ecological system, enhancing the acid resistant capacity of the soil and facilitating the sustainable development of the soil ecological system.

Description

technical field [0001] The invention relates to a combined biological, physical and chemical restoration method for soil acidification improvement, belonging to the technical field of soil quality improvement. Background technique [0002] A large area of ​​acidic soil is widely distributed in the south of the Yangtze River in my country, mainly concentrated in southern provinces such as Zhejiang, Jiangxi, Hunan, Guangdong, Guangxi, Yunnan and Guizhou, with a total area of ​​about 200 million hm 2 , a large portion of which have a soil pH of less than 5.0, or even lower. With the further development of social economy, the area of ​​acidic soil and the degree of soil acidification in my country will further increase. Soil acidification has become an important factor that affects agricultural production and ecological environment, and then affects social economy, and the improvement of acidified soil has attracted more and more attention. The use of lime or limestone powder ...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 徐华勤沈程文王华谭淑端杨知建
Owner HUNAN AGRICULTURAL UNIV
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