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Saline land improvement method and improvement system

A technology for saline-alkali land and salt collection, which is applied in the fields of land preparation, soil-lifting machinery, agricultural machinery and implements. Organic matter, the effect of reducing salinity

Inactive Publication Date: 2015-12-16
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The salt pressure method is to use natural precipitation or artificial flood irrigation to make part of the salinity and alkali penetrate downward along the pores and cracks of the soil, and bring the salt of the surface soil to the bottom layer with the water. Although the above method can make the saline-alkali surface The amount of water is reduced, but it is not long enough to maintain, and a large amount of water is needed. Therefore, it is urgent to develop a method for improving saline-alkali land and a greening planting method for saline-alkali land that consumes less water and can be effective for a long time

Method used

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  • Saline land improvement method and improvement system

Examples

Experimental program
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Effect test

Embodiment 1

[0034] figure 1 A schematic structural view of the saline-alkali land improvement system provided in this embodiment is shown. For the convenience of description, this figure only provides the structural parts related to the present invention.

[0035] Such as figure 1 As shown, a saline-alkali land improvement system, the system includes a ditch, in which a drainage device 1, an isolation layer 2 and a soil layer 3 are sequentially arranged from bottom to top, such as figure 2 Shown, drainage device 1 comprises many salt-collecting pipes 11 and a salt-discharging pipe 12, and salt-collecting pipe 11 and salt-discharging pipe 12 can be plastic pipes or metal pipes, and many salt-collecting pipes 11 are connected with salt-discharging pipe 12 Connected, a plurality of salt collection pipes 11 are arranged vertically, salt discharge pipes 12 are arranged horizontally, salt discharge pipes 12 are provided with a salt discharge valve 121, and a waterproof layer 4 is provided on ...

Embodiment 2

[0038] image 3 A schematic structural view of the saline-alkali land improvement system provided in this embodiment is shown. For the convenience of description, this figure only provides the structural parts related to the present invention.

[0039] The structure of the saline-alkali land improvement system in this embodiment is basically the same as that in Embodiment 1, the difference being:

[0040] Such as image 3 As shown, the system also includes an organic soil layer 5, the organic soil layer 5 is covered on the soil layer 3, and the inlet of the salt collecting pipe 11 is provided with a filter layer, the filter layer is preferably a non-woven fabric layer, and the non-woven fabric is selected for use. Filtration of saline water has better filtering effect and low cost.

Embodiment 3

[0042] A method for improving saline-alkali land, said method comprising the following steps:

[0043] (1) Trenching: use excavators or other plowing tools to dig trenches on saline-alkali land, and multiple trenches can be dug, the depth of each trench is 80-100cm, and the width is 80-100cm;

[0044] (2) Drainage: a drainage device is installed at the bottom of each ditch. The drainage device includes a plurality of salt collection pipes and a salt discharge pipe connected with the plurality of salt collection pipes. The salt discharge pipe is provided with a salt discharge valve;

[0045] (3) Isolation: An isolation layer is buried above the drainage device. The thickness of the isolation layer is 5-10cm. The isolation layer is preferably cinder, sandstone or ceramsite. cm, among them, ceramsite is made of raw materials such as clay or sandstone, which are sintered by ceramics, and the inner side of the ditch is laid with impermeable plastic cloth;

[0046] (4) return to so...

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Abstract

The invention belongs to the saline land improvement technical field, and especially relates to a saline land improvement method and improvement system; the method comprises the following steps: 1, trenching; 2, draining; 3, isolation; 4, soil refilling; 5, fresh water irrigation; 6, laying organoclay; the system comprises a trench, and the trench comprises a drainage device, an isolation layer and a soil layer arranged in sequence from bottom to top; the drainage device comprises a plurality of salt collection pipes and salt discharge pipes connected with the salt collection pipes; the salt discharge pipe is provided with a salt discharge valve; a waterproof layer is arranged on an inner side of the trench; the method is simple in steps, easy to operate, can effectively reduce saline-alkaline level in the saline land, is suitable for crops plantation, low in improvement cost, and an improvement effect lasts in a long time.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land improvement, and in particular relates to a saline-alkali land improvement method and an improvement system. Background technique [0002] Declining arable land has become a worldwide problem. It is a good choice to develop coastal tidal flats and inland saline-alkali land and make full use of existing resources. The area of ​​cultivated land in our country is limited, and there are more than 8 million mu of various types of coastal tidal flats. The saline-alkali land with a salinity of more than 3 per thousand and less than 8 per thousand is either left idle or barely used because of its high salt content. Those that are barely utilized have low yields and poor economic benefits. [0003] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01B79/02
Inventor 王胜
Owner WEIFANG YOURONG IND
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