Degradable non-woven material used for desertification control and preparation method of degradable non-woven material

Abstract

The invention discloses a degradable non-woven material used for desertification control and a preparation method of the degradable non-woven material. The non-woven material is of a tubular structure; the tubular structure is filled with biodegradable super water-absorbent resin; dry resistant plant seeds are spread on the non-woven material, and the seeds can be planted and cultivated after thenon-woven material is buried into a desert when in use. The preparation method comprises the following steps: laying nets in a cross manner after polylactic acid fibers form the nets to obtain a non-woven material of a plane structure, wherein the longitudinal and horizontal strength of the material is reinforced by cross laying of the nets; folding the non-woven material of the plane structure inhalf in the length direction and sealing two edges in the width direction through needling to form a tubular structure; soaking the biodegradable super water-absorbent resin into water, filling the non-woven material with the biodegradable super water-absorbent resin which is saturated after water absorption and uniformly spreading the plant seeds on the surface of the non-woven material. In theinvention, a stripped material is prepared by taking the degradable polylactic acid non-woven material as a coating; the stripped material is applied in the aspects of desertification control and vegetation sand-stabilization, so that the water-retaining property of soil is enhanced, and sand stabilization and grass planting in a desert region are achieved.

Description

technical field [0001] The invention relates to the preparation of a degradable non-woven tubular material for desert control and its application method. Background technique [0002] China is one of the countries with severe desertification in the world. The area of ​​desertified land is 2.622 million square kilometers, accounting for 27.4% of the country's land area. The desert dominated by mobile sand dunes in the desert zone accounts for more than 70% of the country's desert area, and the desertified land dominated by semi-fixed and fixed sand dunes in the desert steppe and steppe zone covers an area of ​​about 328,000 square kilometers. The main reasons for the expansion of desertification are unreasonable human activities, drought, water shortage, sparse vegetation, and wind boost. The key to desert governance is windbreak and sand fixation, protection of existing vegetation, and planned cultivation of psammophytes in desert areas to build sand forests. At present, ...

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Problems solved by technology

[0006] The above two kinds of cultivation substrates are open environments. The disadvantage is that the water-absorbing polymer is distributed on the surface of the non-woven fabric, and the water is easily lost. The water-retaining and water-releasing functions of the water-absorbing resin cannot be fully utilized. Unable to go deep into the desert, it is difficult to realize the effect of windbreak and sand fixation on the desert

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