Greening method for heavy-solonchak waste slope in arid area
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A technology of arid areas and heavy salt, applied in the field of greening of barren slopes on heavy saline soils in arid areas, can solve problems such as high cost, quick effect, and unsustainability
Active Publication Date: 2018-08-14
新疆盛洁环境技术有限责任公司
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The traditional "high water pressure salt" has fast effect but high cost and high water consump
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Embodiment 1
[0026] In mid-April 2016, a 300m-long test demonstration was carried out on the barren slope road section of heavy saline soil in Ganquanbao Economic and Technological Development Zone, Urumqi:
[0027] a. Select the barren slope of heavy saline soil with a slope of 5-25°, soil salt content of 2%, and barren site conditions. On the basis of the original terrain, adopt a partial site preparation method of cutting high and filling low, and use a small bulldozer to clean up the surface of the slope top 1 , the raised ones are flattened, the pits are filled and trimmed, and the slope top 1 maintains a 0.3% reverse slope; then the slope surface 2 is sorted out, the side slope is cleaned, and the depression is filled to make the slope surface 2 level;
[0028] B, open the planting ditch: open the horizontal planting ditch 3 along the contour line with a ditching machine from the top to the bottom of the slope surface 2, cultivate the ridge with the ditch soil, the inner low and the o...
Embodiment 2
[0043] In May 2017, a 500m-long test section of heavy saline soil barren slope greening was carried out on the road section of Shenhua Group Co., Ltd. in Ganquanbao Economic and Technological Development Zone, Urumqi:
[0044] Barren slope finishing:
[0045] a. Select the site conditions of heavy saline soil barren slope with a slope of 5-25°, soil salt content of 2.5%, barrenness, and heavy soil erosion. The surface of the top 1 is cleaned up, the protrusions are flattened, the pits are filled and repaired, and the slope top 1 maintains a 0.3% reverse slope; then the slope 2 is cleaned up, the side slope is cleaned, and the depression is filled to make the slope 2 flat ;
[0046] B, open the planting ditch: open the horizontal planting ditch 3 along the contour line with the ditching machine from the top to the bottom of the slope surface 2, cultivate the ridge with the ditch soil, form the anti-slope ditch with the inner low and the outer high, the outer ridge is 15cm high...
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Abstract
The invention discloses a greening method for a heavy-solonchak waste slope in an arid area. The method disclosed by the invention firstly performs total slope surface greening on a slope wasteland microtopography by a classified halophyte grass strip intercropping method to realize the functions of greening, fertilizing soil, desalting and providing pasture grass; through water guide grooves andwater discharging strips, runoff water and salts in the waste slope are collected to the water discharging strips, and halophilic halophyte grass strips are planted and mowed, so that biological waterdischarge and biological salt discharge are realized; runoff of the slope surface is avoided through counter-slope furrowing, and conditions are provided for salt washing of the surface of the wasteslope; a capillary effect is blocked by a gravel layer with 60 cm, so that salt rising on the soil surface of the water discharging strips is reduced; and the method integrates physical improvement and biological improvement, combines furrowing tillage and water-saving drip irrigation technical measures, is convenient for maintenance, has simple construction and low costs, realizes stability and sustainability of greening of the heavy-solonchak waste slope in the arid area, and provides practical experience and technical reference for greening construction of solonchak waste slopes in the aridarea.
Description
technical field [0001] The invention relates to a method for afforesting barren slopes in heavy saline soil in arid areas, and belongs to the technical field of vegetation restoration and water and soil conservation. Background technique [0002] Due to the legacy of history and the arid climate in the arid area, most of the soil contains salt, and there are residual saline soil and modern saline-accumulated saline soil. The roads passing through the desert fluctuate with the terrain, and salt accumulation is often serious on the low-lying barren slopes. There are three reasons: ① The residual salt caused by historical soil formation, due to the lack of precipitation, the residual salt cannot migrate; Wind deposits in low-lying places; ③Modern man-made influences, in order to improve the ecological environment, windproof and sand-fixing, people unremittingly carry out greening projects, and the water for greening and irrigation carries salt along the terrain and gathers in l...
Claims
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