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

A technology of shrubs and grasses and steep slopes is applied to the field of spraying and greening of shrubs and grasses on extremely steep slopes with bare loess, which can solve the problems of poor scour resistance of spraying substrates, effective use of precipitation, complicated operations, etc., and achieves good effect of artificially promoting vegetation restoration. Solve the effect of difficult afforestation and low preservation rate

Inactive Publication Date: 2017-05-24
SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD +1
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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

Method used

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

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specific Embodiment approach

[0018] The method for afforesting the spraying of shrubs and grasses on the exposed very steep slope of loess of the present invention, its preferred specific implementation mode is:

[0019] Including the following steps:

[0020] A. Determination of the physical and chemical properties of the target slope soil: the main index is the content of soil organic matter, including total nitrogen, total phosphorus and available potassium;

[0021] B, selection of shrub grass seeds and determination of consumption: select local plant species, including shrub seeds and herbaceous seeds full of particles, said shrub seeds include Caragana, Hippophae rhamnoides, Amorpha amorpha and Amaranthus chinensis, and said herbaceous seeds include Wheatgrass, Layweed, Miscanthus, Tall Fescue, Alpaca and Alfalfa, the amount of plant seeds should refer to the moisture carrying capacity of the slope soil;

[0022] C, fertilizer selection: according to the organic matter content result of measuring i...

specific example 1

[0061] At the end of May 2016, 100 square meters of exposed loess steep slopes with an average slope of about 58° and 52° were selected in Wuqi County, northern Shaanxi. Due to the hard soil on the slope surface, chisel pits are arranged, and the row and column spacing of the chisel pits are about 30cm. According to the soil moisture and nutrient conditions on the slope and combined with the germination rate of the seeds, the amount of shrub grass seeds should be selected, including the herbaceous wheatgrass 4g / ㎡, lyssica 3g / ㎡, tall fescue 5g / ㎡, white sheep grass 4g / ㎡ and alfalfa 4.5g / ㎡; shrub caragana, seabuckthorn and amorpha amorpha are sprayed with 3 seeds per square meter. Use 12% nitrogen, phosphorus and potassium, and N:P:K=3:6:3 organic fertilizer 100g / ㎡; Biotic Soil Media 560g / ㎡; High Performance-Flexible Growth Medium 450g / ㎡. Carry out spraying according to above-mentioned step (6).

[0062] After the spraying is completed, watering is carried out every other day, ...

specific example 2

[0064] At the beginning of June 2016, a bare steep slope of about 700 square meters with an average slope of about 36° was selected in Lanzhou City, Gansu Province, and the soil was loose. According to the soil moisture and nutrient conditions on the slope and combined with the germination rate of the seeds, the amount of shrub grass seeds should be selected, including the herbaceous wheatgrass 4g / ㎡, Miscanthus 4g / ㎡, Lyymus 3g / ㎡, tall fescue 5g / ㎡, white sheep grass 4g / ㎡ and alfalfa 4.5g / ㎡; the shrubs Caragana and Amorpha amorpha were sprayed with 3 seeds per square meter, and the four-winged agaricus was 2.5g / ㎡. Choose 40g / ㎡ of organic fertilizer with NPK content of 12% and N:P:K=3:6:3; Biotic Soil Media 390g / ㎡; High Performance-FlexibleGrowth Medium 400g / ㎡. Carry out spraying according to above-mentioned step (6).

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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...

Claims

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Application Information

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IPC IPC(8): A01G1/00E02D17/20
CPCA01G22/00E02D17/202
Inventor 赵兴凯朱清科李增尧李诗刚赵亮周述琼濮阳雪华蒋凯吴宗凯刘广亮
Owner SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD
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