Agricultural mulching film with double-layer structure

Abstract

The invention provides an agricultural mulching film with a double-layer structure. The agricultural mulching film comprises an upper-layer film and a lower-layer film, wherein the hardness of the upper-layer film is greater than that of the lower-layer film; the edges of the upper-layer film and the lower-layer film are in sealed connection; a keel is laminated on the upper-layer film, or the thickness of the upper-layer film is greater than that of the lower-layer film; and a vent hole is formed in the middle of the surface of the lower-layer film. According to arched ridges and a self arched shed structure, the upper-layer film and the lower-layer film are prevented from being adhered. When the agricultural mulching film is used in a dry land, by ridging film-mulching planting, catchment irrigation and soil evaporation reduction effects can be achieved. When the agricultural mulching film is used in a saline and alkaline land, a salinity fading region and a salinity collecting region can be formed even if ridging and planting modes are identical, small environment for plant growth is built, and crops are planted in the salinity fading region and can well grow.

Description

technical field [0001] The invention relates to an agricultural mulching film with a double-layer structure, in particular to an agricultural mulching film that can be used in dry farming and saline-alkali land. Background technique [0002] The currently widely used agricultural mulch films are all of a single-layer structure, which is thin and has a low recycling rate, and water is easy to accumulate under the film, forming a repeated dry-wet layer, which is easy to cause soil salinization. Furthermore, the soil moisture between the ridges can only be actively absorbed and utilized by the plant root system, so the utilization rate of the soil moisture is low, and the evaporated condensed water on the film cannot be utilized. [0003] Therefore, there is a need for an agricultural mulch film with improved structure, which can collect evaporative and condensed water for irrigation or leaching salt, so as to significantly improve the use efficiency of the mulch film; The cro...

AI Technical Summary

Problems solved by technology

[0002] The currently widely used agricultural mulch films are all of a single-layer structure, with a thinner thickness and lower reuse rate, and water is easy to accumulate under the mulch, forming repeated dry and wet layers, which is easy to cause soil salinization

In addition, the soil moisture between the ridges can only be actively absorbed and utilized by the plant roots, so the utilization rate of soil moisture is low, and the evaporated and condensed water on the film cannot be used

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