Non-irrigation forestation revegetation method for arid desert areas

Abstract

The invention discloses a non-irrigation forestation revegetation method for arid desert areas, including the steps of (1) selecting drought enduring plants, which refer to the native vegetation mainly, in the arid desert areas; (2) digging plant holes and applying a soil moisture conservation repair agent prepared by mixing natural-sodium bentonite and decomposed coal in the plant holes; (3) planting the vegetation to the plant holes, backfilling with fine soil, treading down soil around the root to form water-collecting pits; (4) irrigating water fully after planting, wherein watering is omitted in the later period. The revegetation method has wide adaptability to forestation in the arid desert areas; the soil moisture conservation repair agent and the water collecting pits can improve ecological remediation performance of the arid desert areas, the survival rate of seedlings is up to or even more than 80%, the preserving rate is up to or even higher than 75%, and the seedling growthis increased while forestation cost is lowered; therefore, the method solves the difficult problem in non-irrigation forestation revegetation on the natural condition with annual precipitation beingor greater than 50 mm fundamentally.

Description

technical field [0001] The invention relates to the technical field of desert vegetation reconstruction, in particular to a vegetation reconstruction method for non-irrigated afforestation in arid desert areas. Background technique [0002] In the arid desert area, rainfall is scarce, evaporation is strong, soil wind-sandification and salinization are serious, water resources are scarce, and dust weather occurs frequently. These factors lead to the extremely fragile ecological environment in the arid desert area, poor afforestation conditions, and low afforestation survival and preservation rates. , weak growth and other issues, so it is imminent to solve the problem of vegetation reconstruction in arid desert areas. [0003] At present, the shortage of water resources for afforestation in arid desert areas has not been solved, and the cost of manpower, material resources, and financial resources for vegetation reconstruction remains high, and the problem of ecological fragi...

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Problems solved by technology

[0002] In the arid desert area, rainfall is scarce, evaporation is strong, soil wind-sandification and salinization are serious, water resources are scarce, and dust weather occurs frequently. These factors lead to the extremely fragile ecological environment in the arid desert area, poor afforestation conditions, and low afforestation survival and preservation rates. , weak growth and other issues, so it is imminent to solve the problem of vegetation reconstruction in arid desert areas

[0003] At present, the shortage of water resources for afforestation in arid desert areas has not been resolved, and the cost of manpower, material resources, and financial resources for vegetation reconstruction remains high, and the problem of ecological fragility in arid desert areas has not been fundamentally resolved.

[0004] There are also reports on non-irrigation afforestation technology. Domestic scholar Jiang Jin et al. combined the methods of seam planting shovel opening-inserting seedlings to squeeze the root system-using feet, polymer water-retaining agent and rooting powder, etc., to realize the desert forest with annual precipitation ≥ 100mm. There is no irrigation and afforestation in the area, but when the extreme drought occurs, the polymer water-retaining agent will absorb the water from the root system of the plant after losing water, reducing the plant preservation rate; Pan Cunde et al. use sand and volumetric water storage under the natural conditions of annual precipitation Technical measures to realize afforestation without irrigation by Haloxylon, but the survival rate is not mentioned, and the afforestation cost is high; it should be explained that the inventions of the above two scholars cannot be realized in arid desert areas with annual precipitation below 100 mm

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