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Method for utilizing moisture in arid desert region

A desert and arid technology, applied in the field of water utilization in arid desert areas, can solve the problems of water dissipation and aggravating the phenomenon of soil dry layer in artificial forest land.

Active Publication Date: 2014-08-27
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "wet island" formed around the deep rooted plants of Populus euphratica and Tamarix euphratica due to the water lifting effect of the root system and the condensation water effect of the canopy cannot play its role, resulting in ineffective dissipation of water, which in turn exacerbates the phenomenon of dry soil layer in plantation forests

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a, plant selection: strong and drought-resistant xerophyte camel thorn with local water holding capacity, select strong seedlings, 1-2 years old seedlings, seedling height 3-5cm, root length 15-20cm;

[0021] B, within the 100cm range of the outer edge of the deep-rooted plant Populus euphratica, dig tree pits, pit spacing 70cm, pit depth 25cm, pit width 30cm, xerophyte camel thorn seedlings are planted in the pit, and the seedlings are backfilled to 10cm away from the pit mouth;

[0022] c. On the 20th and 30th of late March each year, replant xerophyte seedlings camel thorn seedlings. After the xerophyte seedlings are planted, irrigate to ensure that the soil moisture reaches saturated moisture content after irrigation;

[0023] d. After planting in May, perform another irrigation to ensure the successful planting of seedlings;

[0024] e. After successful planting, choose a clear night with a total cloud cover of less than or equal to 5 during the growth year of the ...

Embodiment 2

[0027] a, the plant selection of planting: with native water-holding capacity stronger and tool drought-resistant xerophyte apocynum, select robust seedlings, 1-2 year old seedlings, seedling height 3-5cm, root length 15-20cm;

[0028] B, within the 200cm scope of deep-rooted plant Tamarix outer edge, dig a tree pit, pit spacing 75cm, pit depth 30cm, pit width 35cm, xerophyte apocynum seedlings are planted in the pit, plant seedling backfill soil to distance pit mouth 10cm;

[0029] c. On the 20th and 30th of late March every year, replant the xerophyte seedlings Apocynum seedlings. After the replanted xerophyte seedlings are planted, irrigate to ensure that the soil moisture reaches saturated water content after irrigation;

[0030] d. After planting in May, perform another irrigation to ensure the successful planting of seedlings;

[0031] e. After successful planting, choose a clear night with a total cloud cover of less than or equal to 5 during the growth year of the plan...

Embodiment 3

[0034] a, the plant selection of planting: with native strong water-holding capacity and drought-resistant xerophyte Huahuachai, select strong seedlings, 1-2 years old seedlings, seedling height 3-5cm, root length 15-20cm;

[0035] B. Within 300cm of the outer edge of the deep-rooted plant Haloxylon, dig a tree pit with a pit spacing of 80cm, a pit depth of 25cm, and a pit width of 40cm. Plant the seedlings of the xerophyte Huachai seedlings in the pit, and backfill the seedlings to a distance of 10cm from the pit mouth;

[0036] c. On the 20th and 30th of late March each year, replant the xerophyte seedlings Huahuachai seedlings. After the xerophyte seedlings are planted, irrigate to ensure that the soil moisture reaches saturated water content after irrigation;

[0037] d. After planting in May, perform another irrigation to ensure the successful planting of seedlings;

[0038] e. After the successful planting, choose a clear night with a total cloud cover less than or equal...

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Abstract

The invention relates to a method for utilizing moisture in an arid desert region. According to the method, root system hydraulic lifting, condensation water formation, plant transpiration consumption and manual moisturizing for rejuvenating seedlings are utilized, a multi-layer community structure is established, so that water which is lifted by the root system, formed by soil condensation and intercepted and absorbed by canopy is fully utilized, ineffective moisture consumption in the arid region is reduced, the use efficiency of water in the arid desert region is improved, the moisture self-maintenance of multi-layer desert plant community of arbors, shrubs and herbaceous plants can be achieved when human assistance measurements are taken, thereby the use efficiency of water in the arid desert region where the amount of precipitation is smaller than 250mm, the amount of evaporation is larger than 2000mm and the groundwater buried depth is large (3m-4m) is improved, and the reverse succession of the community after the human assistance measurements are withdrawn is prevented.

Description

technical field [0001] The invention relates to a water utilization technology in an arid desert area, in particular to a method for plants in an arid desert area to effectively use root system hydraulic lifting, and for communities to intercept condensed water and precipitation. Background technique [0002] Hydrolifting is the process by which some plants absorb water from the wetter deep soil through the deep root system and release it in the drier shallow soil through the shallow root system. The ecological function of hydraulic lifting is mainly to help water transport, and its physiological and ecological significance in improving plant water status under drought stress has been widely recognized and concerned. Specifically, at the individual scale, it alters soil moisture distribution, reduces stomatal closure or increases transpiration, increasing carbon gain due to greater transpiration; at the community scale, it increases hydrodynamics to enhance plant competitive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00
Inventor 黄湘马建新陈亚宁李卫红
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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