Greening method for high water level impermeable saline and alkaline lands and greening system

Abstract

The invention relates to a greening method for high water level impermeable saline and alkaline lands and a greening system adopting the method. The greening method adopts a landfill type drainage ditch to discharge water and salt, longitudinal blind pipes are buried at the bottom of the landfill type drainage ditch, and a water seepage sand layer is paved above the blind pipes. Water is collected through the water seepage sand layer, guided into the blind pipes through water seepage holes arranged on the upper portions of the blind pipes, and discharged into drainage pipes and / or water collecting wells through water outlets of the blind pipes. One side or two sides of the bottom of the landfill type drainage ditch are provided with one or a plurality of landfill type water seepage slope faces, the landfill type water seepage slope faces are provided with a water seepage sand layer, the water seepage sand layer is connected with the water seepage sand layer above the blind pipes into a whole, and the landfill type water seepage slope faces extend to a specific drainage area. By means of the method, the greening system can be formed. The greening method for high water level impermeable saline and alkaline lands and the greening system adopting the method facilitate water discharge and salt discharge, improve growing environment of plants and are particularly suitable for survival and growth of plants in high water level clay saline and alkaline lands.

Description

technical field [0001] The invention relates to a greening method for high-water level impermeable saline-alkali land, and also relates to a greening system for high-water-level impermeable saline-alkali land using the method, which is mainly suitable for greening saline-alkali land with high viscosity and high water level. Background technique [0002] Saline-alkali land exists in large quantities in coastal areas, and the existing forms are different, so the treatment methods are also different. For example, the soil in a coastal park is rubbery black clay, the groundwater level is only 20cm from the surface, the soil is compacted, and the soil grows after rain. When it is wet for a long time, the surface water is reddish brown, and it remains the same for a long time. After the surface was washed by rain, the pH value of the soil was 8.6, and the salt content of the soil at 20cm-60cm underground was 0.42%. On such land, it is difficult to ensure the existence and growth o...

AI Technical Summary

Problems solved by technology

After the surface was washed by rain, the pH value of the soil was 8.6, and the salt content of the soil at 20cm-60cm underground was 0.42%. On such land, it is difficult to ensure the existence and growth of trees by using conventional tree planting methods. Therefore, it is necessary to develop a A tree planting method adapted to this high water level clay saline soil

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