57results about How to "Will not cause white pollution" patented technology

A method for rebuilding and maintaining vegetation ecosystem and pasture production system in semiarid wind sand area relates to the technical fields, such as agricultural water and soil conversation, prevention and control of desertification, pasture cultivation and ecological environment etc, wherein perennial pasture with properties of drought resistance, nitrogen fixing, cold resistance and saline alkali resistance is adopted to combine with a multifunctional ecological film compound fertilizer functioned to bond and fix sand, absorb dampness and infiltrate water, conserve water and soil,fertilize sand and nourish sprout, preserve heat and promote growth. The technical scheme is that: selecting in April or May in spring, on the basis of flat sandy land, after seed soaking, planting the perennial pasture plants, such as varied lobular clover, Astragalus adsurgens pall, sainfoin, vetch, Agropyron desertorum etc; then adopting a method of a spraying can or an agricultural tractor mating with a high pressure water pump; or burying a plastic pipe in the ground, one end of the plastic pipe being connected with a water pump of a large-scaled fertilizer film mixing tank and the otherend thereof being connected with a spraying nozzle; spraying the multifunctional ecological film compound fertilizer by adding water in 50 to 60 times such that an ecological ground film with thickness about 2 mm is naturally formed on the surface of the earth; three processes of spraying water, applying fertilizer and laying film can be completed at the same time so as to synchronously build up an ecological vegetation and pasture production system.

The invention relates to a microporous plastic film. According to the invention, an area of surface pores with diameters within a range of 0.2-7mum accounts for 0.5-15% of a total surface area. A water resistance of the film is higher than 800mm, and a moisture permeability of the film is higher than 1000g / m<2>.day. A stiffness of the film is lower than 40mm. The microporous plastic film provided by the invention has complete biodegradability, and does not cause white pollution. The film is green and environment-friendly, and has good waterproof performance and moisture permeability. The film is soft, and provides a comfortable touch. The film has good forming and processing performances, and can be applied in fields such as sanitary materials, clothing, and building. The microporous plastic film has waterproof, moisture-permeating, and air-permeating effects.

The invention involves a preparation method of fruit and vegetable tourmaline preservation paper and it includes: preparing the tourmaline slurry which particle diameter is 1 -3 microns after the tourmaline crude ore is initial separated, disintegrated, cleaned, magnetic cubed, wet agitated and wet grained; adding the 1-5% tourmaline slurry in to the corrugated paper pulp or the packing paper pulp which percentage by weight is 95-98%, then mixing the paper pulp and the coupling agent which percentage by weight is 0.1% uniform as the paper making raw materials and sending it into the corrugated paper making process line, so preparing the corrugated paper used in packing chest or the polished wrapping paper. The fruit and vegetable tourmaline preservation paper can release negative ions and far infrared rays, it can delay fruit and vegetable respiration, inhibit and kill harmful bacteria, reduce the permeability of the paper, prevent fruits and vegetables evaporating water; the light transmittance is very poor, so it avoids light irradiating the fruit and vegetable to fresh-keeping. It can be used repeatedly, the operation is simple, cost is low, the tourmaline preservation papers used do not cause white pollution, because tourmaline contains about 8.5% of boron which is a fertilizer can develop plant roots.