Saline-alkali soil improving method

A technology of saline-alkali land and improver, which is applied in the direction of soil preparation, soil protection, fertilizer made from biological waste, etc., to achieve the effect of strong pertinence, good quality and high fertilizer content

Inactive Publication Date: 2017-08-25

梁勇

5 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] Aiming at the defects in the prior art, the purpose of the present invention is to provide a method for improving saline-alkali land, to reduce soil bulk density and soil salinity in saline-alkali land; to improve soil porosity and soil nutrients, thereby effectively improving soil salinization and reducing soil salinity. Mi...

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Method used

The technical solution provided by the present invention has the following beneficial effects: (1) the present invention selects underground pipe drainage for use, and solves the problem that open ditch drainage has a large amount of work, and the floor space is large, and ground cutting affects mechanization and dredging every year (2) The saline-alkali land improver of the present invention is divided into water agent and powder agent, all of which can be purchased in the market, especially the liquid com...

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Abstract

The invention relates to a saline-alkali soil improving method. The method combines farming improvement, water conservation improvement and application of a saline-alkali soil amendment, wherein farming improvement comprises deep ploughing, upturned soil sunning and land levelling; water conservation improvement comprises underground salt drain pipe laying and irrigation. With adoption of the method, soil bulk density and soil salinity of the saline-alkali soil can be reduced, soil porosity and soil nutrients can be increased, so that salinization of the soil is effectively improved, and the problems of reduction of grain yield, reduction of vegetation cover area, deterioration of the ecological environment and the like caused by salinization of the soil are relieved; the method is high in pertinence and remarkable in effect, popularization and promotion of technologies are facilitated, and large-scale application can be realized.

Application Domain

Calcareous fertilisersMagnesium fertilisers +5

Technology Topic

Soil salinityAlkali soil +7

Image

Examples

Experimental program(3)
Effect test(1)

Example Embodiment

[0025] Example one

[0026] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0027] S1: Plowing the saline-alkali land in turn, the number of times is 3 times, and the depth of tillage is 40cm; and the drying is performed again, the number of times is 2 times, and the interval between each drying is 8 days;

[0028] S2: Perform land leveling on the saline-alkali land treated with S1, and perform high excavation and low fill leveling on the flat land, with a maximum slope of 10°;

[0029] S3: The saline-alkali soil treated by S2 is used to drain salt water by concealed pipes, the buried depth of the salt-discharge concealed pipe is 1.3m, the slope ratio is 0.7‰, there are multiple salt-discharge concealed pipes in parallel, and the distance between two adjacent salt-discharge concealed pipes It is 30m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gravel material outside;

[0030] S4: Irrigate the saline-alkali land after S3 treatment with a water depth of 3cm and last for 11 days;

[0031] S5: Apply a saline-alkali soil improver to the saline-alkali soil treated with S4. The saline-alkali soil improver is a self-developed liquid compound fertilizer (see the liquid compound fertilizer disclosed in Patent Publication No. CN106588364A), which is evenly sprinkled on the ground surface with an application rate of 1.0t/ mu.

Example Embodiment

[0032] Example two

[0033] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0034] S1: Plowing the saline-alkali land in turn, the number of times is 4 times, and the depth of tillage is 35cm; and the drying is performed again, the number of times is 2 times, and the interval between each drying is 10d;

[0035] S2: Perform land leveling on the saline-alkali land after S1 treatment, and perform high excavation and low filling leveling on the flat land, with a maximum slope of 11°;

[0036] S3: The saline-alkali soil treated by S2 is drained by concealed pipes. The buried depth of the salt-discharge concealed pipe is 1.4m, the slope ratio is 0.8‰, and there are multiple salt-discharge concealed pipes in parallel, and the distance between two adjacent salt-discharge concealed pipes It is 30m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gravel material outside;

[0037] S4: Irrigate the saline-alkali land after S3 treatment with a water depth of 4cm and last for 10 days;

[0038] S5: Apply a saline-alkali soil improver to the saline-alkali soil treated with S4. The saline-alkali soil improver is an aqueous saline-alkali soil improver, which is evenly sprinkled on the ground surface at a rate of 1.5t/mu.

Example Embodiment

[0039] Example three

[0040] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0041] S1: Plowing the saline-alkali land in turn, the number of times is 5 times, and the depth of tillage is 30cm; and the drying is performed again, the number of times is 3 times, and the interval between each drying is 9d;

[0042] S2: Perform land leveling on the saline-alkali land after S1 treatment, and perform high excavation and low fill leveling on the flat land, with a maximum slope of 12°;

[0043] S3: The saline-alkali soil treated by S2 will be drained of salt water by concealed pipes. The buried depth of the salt-discharging concealed pipe is 1.5m, the slope ratio is 0.9‰, and there are multiple salt-discharging concealed pipes in parallel, and the distance between two adjacent salt-discharging concealed pipes It is 40m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gravel material outside;

[0044] S4: Irrigate the saline-alkali land after S3 treatment with a water depth of 5cm and last for 9 days;

[0045] S5: Apply a saline-alkali soil improver to the saline-alkali soil treated with S4. The saline-alkali soil improver is a powder saline-alkali soil improver, which is evenly sprinkled on the ground surface with an application rate of 2.0t/mu.

[0046] The soil obtained from the improvement of Example 1 to Example 3 of the present invention is evaluated, and the blank example is the original saline-alkali soil sample.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Good quality
Increase fat

Saline-alkali soil improving method

A technology of saline-alkali land and improver, which is applied in the direction of soil preparation, soil protection, fertilizer made from biological waste, etc., to achieve the effect of strong pertinence, good quality and high fertilizer content

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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