Degradable mulching film coated with waterproof layer

Abstract

The invention provides a degradable mulching film coated with a waterproof layer. The degradable mulching film comprises a non-woven fabric layer and the waterproof layer. The non-woven fabric layer is coated with the waterproof layer. The degradable mulching film coated with the waterproof layer is degradable and is automatically degraded when plants grow out and film removal is needed, and the cost for manual recovery is saved. In addition, a single-layer non-woven fabric structure has larger pores, severe breathability is caused, the surface of the non-woven fabric is coated with the waterproof layer under the situation that the heat insulation and water retention effects and the like are reduced somewhat, whole structure density is increased, and accordingly the heat insulation and water retention properties and the like are improved. The degradable mulching film coated with the waterproof layer can be used for planting of crops, such as corn, strawberries, cotton, peanuts and tobaccos.

Description

technical field [0001] The invention relates to the field of agricultural production, in particular to a degradable plastic film coated with a waterproof layer. Background technique [0002] In the process of planting many crops, especially tobacco plants, in order to obtain a better growth environment, mulch is used, while the traditional mulch is a plastic (polyethylene or polyvinyl chloride) film. Although it can play the role of heat preservation, water retention and fertilizer preservation, but at the same time, it has many negative effects. [0003] For example, after the mulch film is placed, it needs to be recycled, but the recycling is done manually, which makes it difficult to recycle and causes high recycling costs; at the same time, the mulch film that has not been recycled is not easy to degrade. According to current research, it takes about 300 years for the polyethylene mulch film to completely decompose. time, which caused serious white pollution [0004] I...

AI Technical Summary

Problems solved by technology

[0003] For example, after the mulch film is placed, it needs to be recycled, but the recycling is done manually, which makes it difficult to recycle and causes high recycling costs; at the same time, the mulch film that has not been recycled is not easy to degrade. According to current research, it takes about 300 years for the polyethylene mulch film to completely decompose. time, which caused serious white pollution

[0004] In addition, in addition to high labor costs and environmental pollution, there are also many defects in use.

[0005] For example, because the plastic is not breathable, it is easy to cause water vapor to accumulate to form mist, which reduces the light transmittance of the mulch, which in turn affects the growth of plants under the mulch; and because the traditional polyethylene (polyvinyl chloride) mulch does not have gaps, The product is airtight, which will easily lead to the lack of oxygen under the film. The root system of the plant will grow sideways or even upward due to lack of oxygen, and the root system is easy to age, which will affect the nutrient absorption of the root system. The root system is the main source of nutrients for the plant. This effect will lead to defects in plant growth

[0006] In addition, due to the light-absorbing characteristics of the plastic film itself, in the case of planting under the film, when the plant grows, it is easy to cause burns on the part of the plant that touches the film due to strong light absorption.

[0007] In addition, since plastic mulch is prone to static electricity, it is also easy to be adsorbed on the person who lays the mulch or other objects that come into contact with it during use, causing certain inconvenience

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