Method for planting Suaeda salsa in saturated heavily-salinized soil of arid area

A technology for Suaeda salsa and heavy saline soil, which is applied in field preparation methods, botanical equipment and methods, plant cultivation, etc., can solve the problems of poor soil permeability, accumulation of reducing substances, insufficient content of available nutrients, etc. The effect of artificial and improving the ecological environment

Active Publication Date: 2016-03-02

XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI +1

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AI-Extracted Technical Summary

Problems solved by technology

[0004] However, several greening practices have proved that the general method of this research group (CN102388730A, a method for planting Suaeda saline by drip irrigation in heavy saline-alkali land in arid areas) failed to be successfully planted in saturated saline soil, because the middle and upper layers of the soil...

Abstract

The invention relates to a method for planting Suaeda salsa in saturated heavily-salinized soil of an arid area, wherein a greening area and a drainage area are established according to terrains at first; plastic concealed conduits and an inverted filtering layer are laid and embedded in the greening area in order to reduce soil moisture and soil salinity; a drip irrigation zone is disposed; a shallow trench is excavated; grass charcoal soil is covered to provide a suitable matrix and a micro terrain environment for seed germination of the Suaeda salsa; and an intermittent low-salt environment is provided form germination of the Suaeda salsa and growth in a seedling period through drip irrigation. During a vegetative growth period, a ''Venturi'' drip fertigation device is used to apply water-soluble acid fertilizers, so that partial soil alkalinity is neutralized; available nutrients are provided; a breeding cycle can be completed in one year; and then the saturated salinized soil can be greened in a wild state in each later year. According to the method, a bald and heavily-salinized landscape with soil water saturation and ground surface salt encrustation can be changed; the ecologic environment is improved; and basically no reinvestment or maintenance is required at a later stage after one time of greening planting in order to realize natural greening. The method provides a technical model for the sustainable greening and beautification in an extreme environment of the arid area.

Application Domain

Plant cultivationCultivating equipments +1

Technology Topic

TerrainGermination +17

Examples

Experimental program(2)

Example Embodiment

[0020] Example 1 (Hongshan Lakeside, Karamay University Town)

[0021] a. During the water cutoff period in autumn, according to the terrain, use mechanical land preparation, select the lowest depression as the drainage area, and level the rest of the land. The leveled green plot is 0.5m higher than the drainage area of the depression, and the slope of the green plot points to the depression. The height difference in the green plot is 5cm;

[0022] Plastic hidden pipe and anti-filter layer laying:

[0023] b. Manually or by ditching machine, ditch along the slope direction in the green land after leveling, the ditch depth is 0.5m, the ditch width is 0.3m, and the spacing is 5m. , lay a PVC pipe with a diameter of 125mm on the surface of the gravel with the holes facing upward, then cover the PVC pipe with gravel with a depth of 10cm and cover it with soil to level. Before laying the PVC pipe, punch holes on the upper surface of the PVC pipe 60 pcs/m, hole diameter 5mm, and then wrap the perforated PVC pipe with a layer of geotextile, and the geotextile and gravel layer are used as the outer filter layer. The ratio of the height difference at both ends to the horizontal length of the PVC pipe), install a ball valve at the outlet of the PVC pipe to control the water flow;

[0024] Laying drip tape:

[0025] c. Lay drip irrigation tapes in parallel with a spacing of 0.6-0.8m perpendicular to the slope aspect;

[0026] Planting Suaeda salsa:

[0027] d. Use a small hoe to manually dig a V-shaped planting ditch along the drip irrigation belt, with a depth of 4cm and a width of 10cm above the ditch. Fill the V-shaped planting ditch with 2cm deep peat soil, place the drip irrigation belt in the middle of the V-shaped planting ditch, and then Sow Suaeda salsa seeds mixed with wet sand in a V-shaped planting ditch at a volume ratio of 1:1;

[0028] Irrigation and Fertilization:

[0029] e. Immediately after sowing, drip irrigation, drip irrigation once every 2 days in the seedling stage; drip irrigation once about 7 days after the seedling stage; in the vegetative growth period, use a Venturi drip irrigation fertiliser to apply water-soluble acid fertilizer 2 times, with an interval of 15 days between each time. Each growth period was irrigated to the extent that there was no water accumulation in the planting furrow.

Example Embodiment

[0030] Example 2 (Kelamayi Forest Park Wetland)

[0031] a. During the water cutoff period in autumn, according to the terrain, use mechanical land preparation, select the lowest depression as the drainage area, and level the rest of the land. The green plot after leveling is 0.6m higher than the drainage area of the depression, and the slope of the green plot points to the depression. The height difference in the green plot is 4cm;

[0032] Plastic hidden pipe and anti-filter layer laying:

[0033] b. Manually or by ditching machine, ditch along the slope direction in the green land after leveling, the ditch depth is 0.5m, the ditch width is 0.3m, and the spacing is 5m. , lay a PVC pipe with a diameter of 125mm on the surface of the gravel with the holes facing upward, then cover the PVC pipe with gravel with a depth of 10cm and cover it with soil to level. Before laying the PVC pipe, punch holes on the upper surface of the PVC pipe 60 pcs/m, hole diameter 5mm, and then wrap the perforated PVC pipe with a layer of geotextile, and the geotextile and gravel layer are used as the outer filter layer. The ratio of the height difference at both ends to the horizontal length of the PVC pipe), install a ball valve at the outlet of the PVC pipe to control the water flow;

[0034] Laying drip tape:

[0035] c. Lay drip irrigation tapes in parallel with a spacing of 0.6-0.8m perpendicular to the slope aspect;

[0036] Planting Suaeda salsa:

[0037] d. Use a small hoe to manually dig a V-shaped planting ditch along the drip irrigation belt, with a depth of 4cm and a width of 10cm above the ditch. Fill the V-shaped planting ditch with 2cm deep peat soil, place the drip irrigation belt in the middle of the V-shaped planting ditch, and then Sow Suaeda salsa seeds mixed with wet sand in a 1:1 volume ratio in the V-shaped planting ditch;

[0038] Irrigation and Fertilization:

[0039] e. Immediately after sowing, drip irrigation, drip irrigation once every 2 days in the seedling stage; drip irrigation once about 7 days after the seedling stage; in the vegetative growth period, use a Venturi drip irrigation fertiliser to apply water-soluble acid fertilizer 2 times, with an interval of 15 days between each time. Each growth period was irrigated to the extent that there was no water accumulation in the planting furrow.

[0040] The method for planting Suaeda salsa in the saturated heavy saline soil in arid area according to the present invention is carried out in the Hongshan Lakeside of Karamay University City and the wetland of Karamay Forest Park respectively. The average rate was 85% higher than that before the test. The effect of soil desalination and waterlogging is obvious. Compared with before the test, due to the effect of drip irrigation and leaching of soil salinity and the effect of the underground pipe drainage project, the soil water is reduced from 32%-35% to 18%-20%, which is about 43% lower; Topsoil salinity was reduced by 30-50%.

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Classification and recommendation of technical efficacy words

Improve the ecological environment
labor saving

Method for planting Suaeda salsa in saturated heavily-salinized soil of arid area

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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