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Method for collecting rain, suppressing steaming and improving coast saline soil

A saline soil and rain harvesting technology, applied in land preparation methods, restoration of polluted soil, agricultural machinery and implements, etc. The effect of improving soil composition

Inactive Publication Date: 2009-04-15
INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, coastal saline soil is mainly washed and pressed by a large amount of fresh water. However, there is basically no improvement method for saline soil in places where there is no fresh water.

Method used

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  • Method for collecting rain, suppressing steaming and improving coast saline soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The operation steps are as follows:

[0018] 1), fertilization: apply 10,000 kilograms of organic fertilizer and 50 kilograms of superphosphate in coastal saline soil 1;

[0019] 2), arable land: plow the coastal saline soil 1 to a depth of 30 cm;

[0020] 3), cofferdam leveling the land: coastal saline soil 1 is grid-shaped to enclose soil ridge 2, and the height of soil ridge 2 is 20cm, forms the fields of different sizes; The field surrounded by each soil ridge 2 Leveling within the block;

[0021] 4), Covering the plastic film 4: Covering the plastic film 4 in the fields surrounded by each soil ridge 2, the plastic film 4 is provided with a plurality of small holes 3, allowing precipitation to flow into the soil through the small holes 3, and washing the soil salt;

[0022] 5), in the small hole 3 of the mulching film 4, plant the vetch 5 that can fertilize the soil, and can also cover the plant residue, reduce surface evaporation and slow down the aging of the pl...

Embodiment 2

[0025] The operation steps are as follows:

[0026] 1), fertilization: apply 5000 kilograms of organic fertilizers and 100 kilograms of superphosphate in coastal saline soil 1;

[0027] 2), arable land: machine-plow coastal saline soil 1 to a depth of 15 cm;

[0028] 3), cofferdam leveling the land: the coastal saline soil 1 is gridded to surround the soil ridge 2, and the height of the soil ridge 2 is 10cm, forming fields of different sizes; the fields surrounded by each soil ridge 2 Leveling within the block;

[0029] 4), Covering the plastic film 4: Covering the plastic film 4 in the fields surrounded by each soil ridge 2, the plastic film 4 is provided with a plurality of small holes 3, allowing precipitation to flow into the soil through the small holes 3, and washing the soil salt;

[0030] 5), in the small hole 3 of the mulching film 4, plant the vetch 5 that can fertilize the soil, and can also cover the plant residue, reduce surface evaporation and slow down the agi...

Embodiment 3

[0033] The operation steps are as follows:

[0034] 1), fertilization: apply 75,000 kilograms of organic fertilizer and 75 kilograms of superphosphate in coastal saline soil 1;

[0035] 2), arable land: machine-plow coastal saline soil 1 to a depth of 23 cm;

[0036] 3), cofferdam leveling the land: the coastal saline soil 1 is grid-shaped to surround the soil ridge 2, and the height of the soil ridge 2 is 15cm, forming fields of different sizes; the fields surrounded by each soil ridge 2 Leveling within the block;

[0037] 4), Covering the plastic film 4: Covering the plastic film 4 in the fields surrounded by each soil ridge 2, the plastic film 4 is provided with a plurality of small holes 3, allowing precipitation to flow into the soil through the small holes 3, and washing the soil salt;

[0038] 5), in the small hole 3 of the mulching film 4, plant the vetch 5 that can fertilize the soil, and can also cover the plant residue, reduce surface evaporation and slow down the...

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Abstract

The invention discloses a method for improving coastal saline soil by gathering rain water and suppressing evaporation. The method comprises the following steps: 1) fertilization: applying organic fertilizers and superphosphate; 2) plough: ploughing the soil to a depth of 15 to 30; 3) cofferdam building and land leveling: raising a network of soil ridges to form land pieces in different sizes and leveling each land piece encircled by the ridges; 4) covering plastic film: covering each land piece encircled by the ridges with a plastic film which has a plurality of pores for allowing rain water to flow into soil to wash off salts in the soil; 5) planting sesbania in the pores which can fertilize soil, cover plant residue, reduce land-surface evaporation and slow down the aging of the plastic film. The method, when large amount of fresh water is not available, can use rain water and a rain water gathering and evaporation suppressing agricultural technology to reduce salt content in the coastal saline soil effective and improve and use the coastal saline soil.

Description

technical field [0001] The invention relates to a method for improving saline soil, in particular to a method for improving coastal saline soil by collecting rain and suppressing steam. Background technique [0002] The main causes of soil salinization are: dry climate, poor drainage and excessive groundwater mineralization, which are often referred to as "high", "big" and "existent". "High" means that the groundwater level is high, and the soil has capillary water absorption. Generally, the capillary water absorption height of the soil is about 1.5 meters. If the groundwater level is higher than 1.5 meters, the salt in the groundwater will rise to the surface with the water, and the water will evaporate, leaving the salt On the surface, if the salt exceeds a certain concentration, it will cause harm to crops and form saline soil. The high groundwater level is mainly caused by poor drainage; The salt in the water is accumulated in the surface soil, forming saline soil. The ...

Claims

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Application Information

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IPC IPC(8): A01B79/02B09C1/00
Inventor 郑东峰孙泽强牟芬李絮花王学君杨新丽董晓霞刘法舜徐长英
Owner INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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