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A method of using forest litter to improve saline-alkali soil

A soil improvement and litter technology, applied in the field of soil remediation, can solve problems such as the ineffectiveness of forest litter, and achieve the effects of remarkable improvement effect, abundant raw material sources and simple method.

Active Publication Date: 2022-03-11
HUNAN HYBRID RICE RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Forest litter decomposes to produce macronutrients such as carbon, nitrogen, phosphorus, and potassium, as well as micronutrients such as calcium, copper, magnesium, manganese, iron, and zinc. However, forest litter does not currently play a role in improving saline-alkali land

Method used

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  • A method of using forest litter to improve saline-alkali soil
  • A method of using forest litter to improve saline-alkali soil
  • A method of using forest litter to improve saline-alkali soil

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A kind of method utilizing forest litter to saline-alkali soil improvement, is characterized in that, comprises the following steps:

[0028] (1) Carry out deep plowing on the saline-alkali land, excavate the topsoil, and form a 30cm deep treatment pit;

[0029] (2) Lay 10cm of litter-salt barrier in the treatment pit, said litter-salt barrier comprises 50% of furnace ash and 50% of forest litter by volume percentage, wherein forest litter is calculated by mass percentage. The content is 80%;

[0030] (3) backfilling the topsoil on the litter-salt barrier layer, leveling the land;

[0031] (4) Spread pretreated forest litter 5cm above the surface soil, the specific method of pretreatment is: by weight, get 80 parts of forest litter that is sheared and broken to less than 3cm in length, and the mass concentration is 10 parts of 99.3% ammonium chloride granules and 1 part of urea with a mass concentration of 99% are mixed and placed in a sealed fermentation tank for fer...

Embodiment 2

[0035] A kind of method utilizing forest litter to saline-alkali soil improvement, is characterized in that, comprises the following steps:

[0036] (1) Carry out deep plowing on the saline-alkali land, excavate the topsoil, and form a 30cm deep treatment pit;

[0037] (2) In the treatment pit, a 12cm litter-salt layer is laid, and the litter-salt layer comprises 50% of furnace ash and 50% of forest litter by volume percentage, wherein forest litter is calculated by mass percentage. The content is 80%;

[0038] (3) backfilling the topsoil on the litter-salt barrier layer, leveling the land;

[0039] (4) Spread pretreated forest litter 5cm above the surface soil, the specific method of pretreatment is: by weight, get 80 parts of forest litter that is sheared and broken to less than 3cm in length, and the mass concentration is 12 parts of 99.3% ammonium chloride granules and 2 parts of urea with a mass concentration of 99% are mixed and placed in a sealed fermentation tank for...

Embodiment 3

[0043] A kind of method utilizing forest litter to saline-alkali soil improvement, is characterized in that, comprises the following steps:

[0044] (1) Carry out deep plowing on the saline-alkali land, excavate the topsoil, and form a 30cm deep treatment pit;

[0045] (2) In the treatment pit, a 13cm litter-salt layer is laid, and the litter-salt layer comprises 50% of furnace ash and 50% of forest litter by volume percentage, wherein forest litter is calculated by mass percentage. The content is 80%;

[0046](3) backfilling the topsoil on the litter-salt barrier layer, leveling the land;

[0047] (4) Spread pretreated forest litter 8cm above the surface soil, the specific method of pretreatment is: by weight, get 100 parts of forest litter that is sheared and broken to less than 3cm in length, and the mass concentration is 12 parts of 99.3% ammonium chloride granules and 3 parts of urea with a mass concentration of 99% are mixed and placed in a sealed fermentation tank for...

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Abstract

The invention relates to the technical field of soil remediation, in particular to a method for improving saline-alkali soil by using forest litter. The present invention comprises the following steps: (1) plowing deeply, excavating the topsoil; (2) laying the litter salt barrier; (3) backfilling the topsoil to level the land; (4) laying the pretreatment litter above the topsoil; 5) Cover the pretreated litter with a dense mesh and let it decompose naturally for 1 to 3 months. The invention utilizes forest litter to avoid secondary saline-alkali and secondary pollution in saline-alkali land, effectively and environmentally friendly reduces soil pH and salt content, improves soil physical and chemical properties in saline-alkali land, and increases soil productivity. The method of the invention is simple in operation, easy to obtain raw materials, low in cost and good in economic benefits, and the improved soil is suitable for various land use types such as common cultivated land, woodland, grassland and the like.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to a method for improving soil in saline-alkali land. Background technique [0002] Saline-alkali soil is a general term for saline soil and alkaline soil. Saline soil mainly refers to salinized soil with high chloride or sulfate content. The soil is alkaline, but the pH value is not necessarily high. Alkaline soil refers to the soil containing carbonate or heavy phosphate, the pH value is high, the soil is alkaline, the organic matter content of saline-alkali soil is low, the soil fertility is low, the physical and chemical properties are poor, and there are many anions and cations harmful to crops. Promote seedlings. The main factors affecting the formation of saline-alkali land soil are: small precipitation, large evaporation, and the salt dissolved in water is easy to accumulate on the soil surface; water-soluble salt moves from high to low with water and accumulates ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02C05G1/00
Inventor 齐绍武刘建兵吴俊吴朝晖
Owner HUNAN HYBRID RICE RES CENT
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