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Method for increasing calligonum drought stress resistance recovered by manpower on arid desert

A technology of jujube serratia and stress resistance, which is applied in the field of artificial restoration of jujube serratia in arid desert areas, can solve the problem of reducing ecological restoration performance by restoring vegetation, low utilization efficiency of water resources, insufficient drought resistance, etc. problems, to achieve the effect of improving the late survival rate, improving stress resistance, and low economic cost

Inactive Publication Date: 2009-08-19
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional flood irrigation along the surface or single irrigation along the planting ditch for artificially restored vegetation often has the disadvantages of low water resource utilization efficiency and serious evapotranspiration waste, and the artificially restored Jujube seedlings in the arid desert area have no artificial irrigation assistance and lack of natural resources. Under the condition of precipitation, it is often difficult to survive in the later stage due to insufficient resistance to drought
Degradation and reverse succession of restored vegetation often occur, reducing ecological restoration performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a. Seedling selection:

[0024] The tree species to be planted are mainly local drought-resistant shrub species Azalea, and the quality of seedlings is an important factor affecting the survival rate. Therefore, robust seedlings must be selected, and 1-year-old seedlings must be selected to ensure that the root length is 10cm and the base diameter is 0.5cm and 50cm above the ground, no damage to the root system, splitting, unqualified seedlings, diseased seedlings, and disabled seedlings cannot be used;

[0025] b. Early site preparation:

[0026] Excavate a shallow ditch for planting and early saturated irrigation before planting. Its width is 50cm and depth is 15cm. The size of the tree planting pit is 50×50×60cm. It is used for early irrigation and water storage to promote the generation of root redundancy, for early planting seedling saturation irrigation and early irrigation treatment, and to prevent dry discharge of salt caused by later irrigation. The spacing be...

Embodiment 2

[0033] a. Seedling selection:

[0034]The tree species to be planted are mainly local shrubs with a certain degree of drought resistance. The quality of seedlings is an important factor affecting the survival rate. Therefore, robust seedlings must be selected. Generally, 2-year-old seedlings are selected to ensure that the root length is 15cm and the base diameter is 15cm. 0.8cm and 60cm above the ground, no damage to the root system, no splitting, unqualified seedlings, diseased seedlings, and disabled seedlings cannot be used;

[0035] b. Early site preparation:

[0036] Before planting, a shallow ditch for planting and early saturated irrigation should be excavated. Its width is 60cm and depth is 20cm. The size of the tree planting pit is 50×50×60cm. Part of it is used for early irrigation and water storage to promote the generation of root redundancy; it is used for saturated irrigation and early irrigation treatment of early planted seedlings and to prevent dry discharge...

Embodiment 3

[0043] a. Seedling selection:

[0044] The tree species to be planted are mainly local shrubs with a certain degree of drought resistance. The quality of seedlings is an important factor affecting the survival rate. Therefore, robust seedlings must be selected. Generally, 1.5-year-old seedlings are selected to ensure that the root length is 13cm and the base diameter is 13cm. 1.0cm and 55cm above the ground, no damage to the root system, splitting, unqualified seedlings, diseased seedlings, and disabled seedlings cannot be used;

[0045] b. Early site preparation:

[0046] Before planting, a shallow ditch for planting and early saturated irrigation should be excavated. Its width is 55cm and depth is 18cm. The size of the tree planting pit is 50×50×60cm. Part of it is used for early irrigation and water storage to promote the generation of root redundancy; it is used for saturated irrigation and early irrigation treatment of early planted seedlings and to prevent dry discharge...

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Abstract

The invention relates to a method for improving drought stress resistance of artificially restored Calligonum rubicundunm in a drought desert area, which comprises the following steps of nursery stock selection, early soil preparation, early nursery stock treatment, irrigation treatment and the like, and utilizes a feedback regulation system formed through drought induction of partial root systems of the Calligonum rubicundunm to improve the adaptive capacity of the Calligonum rubicundunm to the drought so as to achieve the aim of improving the integral drought stress resistance of the artificially restored Calligonum rubicundunm in the drought desert area and avoid converse succession after the artificial assistance measures are cancelled. The method realizes survival and growing development of artificially restored Calligonum rubicundunm seedlings by means of the drought stress resistance of the Calligonum rubicundunm seedlings under the natural conditions of precipitation amount less than 100 mm and drought climate after the artificial assistance measures are cancelled.

Description

technical field [0001] The invention relates to a technique for improving the drought stress resistance of vegetation restoration in arid desert areas, and in particular to a method for artificially restoring the drought stress resistance of Jujube japonica in the arid desert area. Background technique [0002] The total area of ​​arid and semi-arid regions in my country accounts for about half of the total area of ​​the country. The national desert and desertification land area reaches 1.533 million square kilometers, accounting for 15.9% of the country's land area. It is one of the countries with the largest desert area, wide distribution and the most serious desertification hazards in the world. Xinjiang is located in the hinterland of the Eurasian continent and has a typical continental arid climate. Most areas are in semi-arid, arid and extremely arid areas. The soil development is very weak, with little natural precipitation and large potential evaporation. The vegeta...

Claims

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Application Information

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IPC IPC(8): A01G17/00
Inventor 李卫红朱成刚马晓东陈亚宁
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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