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Method for improving severe saline-alkali land

A technology for severe saline-alkali land and saline-alkali land, which is applied in the direction of soil preparation methods, applications, agricultural machinery and implements, etc. It can solve the problems of high cost of amendments and low soil pH adjustment ability, so as to improve soil, reduce salinity, and increase fertility Effect

Inactive Publication Date: 2015-12-02
GUIZHOU KAILIN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the amendment is relatively high, and its ability to adjust soil pH is low

Method used

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  • Method for improving severe saline-alkali land

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Effect test

Embodiment 1

[0031] A method for improving severe saline-alkali land, comprising the following steps:

[0032] (1) Phosphogypsum pretreatment: dry the phosphogypsum until its moisture content is 3%, and then send it into a pulverizer for pulverization to obtain gypsum powder with a phosphorus fineness of 60 mesh;

[0033] (2) Pretreatment of saline-alkali land: the planting site is the saline-alkali land of Haixing Bingjie Farm, and the total salt content of the 0-20cm topsoil is 0.42%. In a ditch with a width of 20 cm and a ditch distance of 30 cm, phosphogypsum powder is evenly spread in the ditch and then filled with soil. The application rate of phosphogypsum powder is 1500 kg / mu, and then rotary tillage is carried out. After 14 days of filming, remove the film and carry out leaching treatment, then evenly apply compost and oily dryness in the saline-alkaline land, the application rates of compost and oily dryness are 1200kg / mu and 1000kg / mu respectively, and then carry out rotary till...

Embodiment 2

[0041] A method for improving severe saline-alkali land, comprising the following steps:

[0042] (1) Phosphogypsum pretreatment: dry the phosphogypsum until its moisture content is 7%, then send it into a pulverizer for pulverization, and obtain gypsum powder with a phosphorus fineness of 200 mesh;

[0043] (2) Pretreatment of saline-alkali land: the planting site is the saline-alkali land of Haixing Bingjie Farm, and the total salt content of the 0-20cm topsoil is 0.58%. For a ditch with a width of 30cm and a distance of 40cm, spread phosphogypsum powder evenly in the ditch and fill it with soil. The application rate of phosphogypsum powder is 2000kg / mu, and then perform rotary tillage treatment. The depth of the cultivated land is 12cm, and the film is covered. After 30 days, remove the film and carry out leaching treatment, and then evenly apply compost and oil dry in the saline-alkali land, the application rates of compost and oil dry are 1800kg / mu and 1500kg / mu respectiv...

Embodiment 3

[0051] A method for improving severe saline-alkali land, comprising the following steps:

[0052] (1) Phosphogypsum pretreatment: dry the phosphogypsum until its moisture content is 5%, then send it into a pulverizer for pulverization, and obtain gypsum powder with a phosphorus fineness of 80 mesh;

[0053] (2) Pretreatment of saline-alkali land: the planting site is the saline-alkali land of Haixing Bingjie Farm, and the total salt content of the 0-20cm topsoil is 0.52%. For a ditch with a width of 22cm and a distance of 35cm, spread phosphogypsum powder evenly in the ditch and fill it with soil. The application rate of phosphogypsum powder is 1800kg / mu, and then perform rotary tillage treatment. The depth of the cultivated land is 15cm, and the film is covered After 14 to 30 days, remove the film and perform leaching treatment, then evenly apply compost and oil dry in the saline-alkali land, the application rates of compost and oil dry are 1500kg / mu and 1200kg / mu respectivel...

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Abstract

The invention discloses a method for improving severe saline-alkali land. Firstly, ardealite powder is evenly spread in furrows of the saline-alkali land, then earthing is performed to fill and level up the furrows, rotary tillage treatment is performed, thin films are taken away and leaching treatment is performed after thin film mulching is performed for a period of time, a compost and oil cakes are evenly applied in the saline-alkali land, rotary tillage treatment is performed again, finally wild sweet potato cuttings are put into the saline-alkali land in a cuttage mode, and follow-up management is performed. According to the method, the ardealite is firstly adopted to improve the saline-alkali land, then the compost and the oil cakes are used for improving the saline-alkali land, and wild sweet potatoes are planted in the improved saline-alkali land, so that it is ensured that the wild sweet potatoes lushly grow in the treated saline-alkali land; growth of the wild sweet potatoes can promote formation of soil granule structures, the physical and chemical properties of soil are improved, organic matter and available nitrogen in the soil are increased, the saline content in the soil is reduced, wild sweet potato fruits and tubers are further obtained from the planted wild sweet potatoes, and remarkable economic benefit is gained.

Description

technical field [0001] The invention relates to the technical field of improving saline-alkali land, in particular to a method for improving severe saline-alkali land. Background technique [0002] Saline-alkali land is the general term for salt land and alkaline land. 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, and the soil is alkaline. The content of organic matter in saline-alkali land is low, the soil fertility is low, the physical and chemical properties are poor, and there are many anions and cations harmful to crops, so it is difficult for crops to promote seedlings. The area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares are in my country. The formation of alkaline land and alkalized soil in my country is mostly related...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
Inventor 廖吉星魏发展蒋俊蕊宋斌蔺忠建项双龙
Owner GUIZHOU KAILIN GRP CO LTD
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