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Sucking irrigation method with mulching under soil

A technology of plastic film covering and soil layer, which is applied to botany equipment and methods, irrigation pipes, gardening, etc., can solve the problems of microporous seepage pipe blockage, etc., and achieve the effects of reducing pollution, obvious water saving effect, and simple operation and maintenance

Inactive Publication Date: 2002-08-07
邵龙潭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But clogging of microporous seepage tubes is also a serious problem

Method used

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  • Sucking irrigation method with mulching under soil
  • Sucking irrigation method with mulching under soil
  • Sucking irrigation method with mulching under soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Subsoil film mulching suction irrigation method, such as figure 1 As shown, a water-resistant layer 1 is laid on the lower part of the surface depth soil layer, and the material is geomembrane. A water storage layer 2 is laid on the water-resistant layer, and the material of the water storage layer is gravel. The water supply and drainage ditches are connected with the water storage layer by a permeable wall. A reverse filter layer 3 is laid on the water storage layer, the material of the reverse filter layer is fine sand, and the reverse filter layer prevents the water storage layer from being silted up. The soil layer 4 is laid on the reverse filter layer, and the plants rely on the capillary action of the soil layer and surface evaporation to achieve the purpose of absorbing irrigation.

Embodiment 2

[0012] Subsoil film mulching suction irrigation method, such as figure 2 As shown, the composite water-resisting layer 1 and water-storage layer 2 are laid on the lower part of the surface depth soil layer. The mulch is compounded together. The anti-filter layer geotextile 5 is laid on the surface of the water storage layer, and the soil layer 4 is above the geotextile, and the water supply and drainage ditch and the water storage layer are connected by a permeable wall 6 . Geotextiles prevent soil from clogging the aquifer.

Embodiment 3

[0014] Subsoil film mulching suction irrigation method, such as image 3 As shown, except that there are ridges 7 on the film of the water-repelling layer and the material of the water storage layer is an inorganic porous material, the rest are the same as in Example 2. This kind of plastic film with ridges is mostly used in undulating terrain to ensure the effect of water storage layer. The material of the ridges is the same as that of the horizontal mulch, and is bonded with the horizontal mulch to be impermeable by hot pressing. The ridge can be a one-way ridge or a two-way ridge. The one-way ridge mulch film is suitable for terrains with unidirectional slope changes, and the two-way ridge mulch film is used for uplifted hilly terrain.

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Abstract

A method of suction irrigation with mulch film covering under the true soil layer relates to a water saving irrigation method in which the mulch film or earth-work mulch film and laid-out under the true soil of certain depth. Under the soil of earth surface a water isolating layer is laid out. According to the requirement to lay out a water storage layer above said water-isolating layer and to lay a reversed filter layer above the water storage layer. To lay a soil layer above the reversed filter layer the water will be supplied to the soil around the plant root system by the capillarity and the evaporatino action of soil surface. The water isoalting layer with protect the water in water storage layer from penetrating to the under-ground and the reserved filter layer will protect the soillayer at above from blocking the water storage layer which connects to water supply and drainage ditch through water penetrating wall for water supply and rain water collection. The present inventioncan be used for water supply to lawn for city green, turf for sports field vegetables in greenhouse and others.

Description

(1) Technical field: [0001] The invention relates to a water-saving irrigation method for laying a geomembrane or a plastic film at the lower part of a soil layer with a certain thickness to realize underground irrigation. (two) background technology: [0002] Currently, known irrigation methods can be classified into surface irrigation, sprinkler irrigation and drip irrigation. Surface irrigation is a traditional irrigation method. It transports water through channels, and then applies water to the fields through designed furrows and furrows. This method has a long history and has the advantages of simple operation, low operating cost, and convenient maintenance. It is the most widely used irrigation method in the world, especially in developing countries, accounting for more than 90% of the total irrigation area. In our country currently accounts for 98%. The biggest disadvantage of the ground irrigation method is low water use efficiency, large evaporation and seepage ...

Claims

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Application Information

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IPC IPC(8): A01G25/00E02B13/00
Inventor 邵龙潭单宗岭王军辉
Owner 邵龙潭
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