Shrub and herbaceous plant spray sowing greening method for extremely steep slopes with bare loess

Abstract

The invention discloses a shrub and herbaceous plant spray sowing greening method for extremely steep slopes with bare loess. The shrub and herbaceous plant spray sowing greening method includes steps of measuring physical and chemical properties of soil on target slope surfaces; selecting native plant species including shrub seeds and herbaceous seeds with plump particles; selecting materials capable of increasing organic matters in the soil; selecting appropriate biological organic fertilizers and determining the usage of the biological organic fertilizers; selecting non-toxic, harmless and completely degradable spray sowing matrixes; forming engraved pits on the slope surfaces according to the shape of an inverted 'T' if the soil on the slope surfaces is hard; determining whether the selected materials capable of increasing the organic matters are used or not according to the contents of organic matter components in the soil; uniformly mixing the biological organic fertilizers, the seeds and the spray sowing matrixes with one another to obtain mixtures and carrying out spray sowing on the mixtures; carrying out artificial irrigation according to local actual weather conditions after spray sowing is completely carried out. The spray sowing matrixes mainly comprise wood fibers, and good slope surface attaching effects can be realized by the spray sowing matrixes. The shrub and herbaceous plant spray sowing greening method has the advantages that the problems of high forestation difficulty and low survival rate of extremely steep slopes with loess can be solved, excellent effects of artificially promoting vegetation restoration can be realized, and the shrub and herbaceous plant spray sowing greening method is little in disturbance on the soil on the soil surfaces, easy to implement and low in cost.

Description

technical field [0001] The invention relates to a greening method for steep loess slopes, in particular to a greening method for spraying shrubs and grasses on extremely steep loess bare slopes. Background technique [0002] The loess region in Northwest my country has less precipitation and strong solar radiation. With the rapid development of the city, more and more exposed loess slopes have been formed due to the construction of roads and other infrastructure, most of which are extremely steep or even dangerous slopes (slope>35°), and the surface soil is mostly poor raw soil , It is difficult for plants to grow naturally, making it a frequent occurrence of natural disasters such as landslides. At present, the treatment of such exposed loess slopes mostly adopts the methods of masonry covering, perforating afforestation and spraying for greening, or it is discarded without treatment. The cost of masonry covering is high, and precipitation cannot be used effectively; a...

AI Technical Summary

Problems solved by technology

The cost of masonry covering is high, and precipitation cannot be used effectively; afforestation by drilling usually has specific requirements on the specifications of the holes, and the operation is relatively complicated; the traditional spraying greening method is not suitable for operation on extremely steep slopes due to insufficient adhesion of the spraying substrate. It is usually adopted to reinforce the slope surface by inserting anchor rods or hanging nets and provide attachments for the sprayed base material, which disturbs the original slope surface greatly, the operation is complicated, and the cost is high. The sprayed base material has poor erosion resistance and is easy to It is washed away by rainwater, resulting in a waste of resources, and most of the herbaceous plant seeds are used for spraying, and the vegetation types are single

Images