Method for increasing organic carbon sequestration of saline arbor-shrub plants in arid desert area

A technology of organic carbon and halogenesis, applied in botany equipment and methods, plant cultivation, horticulture, etc., can solve the problem of increasing organic carbon by nitrate nitrogen

Inactive Publication Date: 2015-09-23
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

But at present, there is no method to increase organic carbon by using nitrate nitrogen at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] For areas where the halophytic tree Ash Poplar grows:

[0019] a. Carry out in autumn when the surface temperature is 10°C;

[0020] b. Dig a pit at a distance of 100cm from the root of the ash poplar tree. The depth of the pit is 50cm, and the length and width are 150cm. Apply 10cm of nitrate nitrogen in the pit according to the nitrogen level of 10mmol / L, then backfill the excavated soil, compact it, and apply nitrate nitrogen After that, water it, and then carry out follow-up management according to the conventional method.

Embodiment 2

[0022] For the growing regions of the halophytic shrub Salina chinensis:

[0023] a. Carry out in autumn when the surface temperature is 10°C;

[0024] b. Dig a pit at a distance of 50 cm from the root of the shrub Saltwood. The depth of the pit is 30 cm, and the length and width are 50 cm. Apply 10 cm of nitrate nitrogen in the pit according to the nitrogen level of 10 mmol / L, then backfill the excavated soil, compact it, and water it , and then carry out follow-up management according to the conventional method.

Embodiment 3

[0026] For the area where the halophytic tree Populus euphratica grows:

[0027] a. Carry out in autumn when the surface temperature is 15°C;

[0028] b. Dig a pit at a distance of 200cm from the root of the arbor Populus euphratica. The depth of the pit is 80cm, and the length and width are 200cm. Apply 40cm of nitrate nitrogen in the pit according to the nitrogen level of 12mmol / L, then backfill the excavated soil, compact it, and apply nitrate nitrogen. , watering, and follow-up management according to conventional methods.

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Abstract

The invention relates to a method for increasing organic carbon sequestration of saline arbor-shrub plants in an arid desert area. According to the method, holes are dug at 50-250cm positions of the tree-shrub plants at the surface temperature of 10-20 DEG C in autumn or at the early vigorous growth stage of arbors and shrubs in a next year, the arbors include gray poplars, populus euphratica or Russia poplars, the shrubs include halostachys caspica, calligonum rubicundum, anabasis, tangutorum bobr, kalidium, physophora, tamarix, lyceum ruthenium, salsola subcrassa or halocnemum, nitrate nitrogen is sprayed into the holes, growth and development of underground branch roots of the saline arbor-shrub plants are promoted by sprayed nitrate nitrogen nutrition, more biomasses generated by photosynthesis of the plants are distributed underground, root-canopy ratio increase is further promoted, the growth amount of an underground root system is increased, and long-term storage of underground organic carbon of the plants is increased to compensate loss of carbon sequestration capacity reduction of an ecological system due to vegetation decline in the arid desert area.

Description

technical field [0001] The invention relates to a method for fixing organic carbon of halophytic plants in arid desert areas, in particular to a method for increasing organic carbon fixation of halophytic arbor and shrub plants in arid desert areas. Background technique [0002] At present, the area of ​​arid and semi-arid regions in the world has exceeded 1 / 3 of the total land surface area of ​​the earth. Due to harsh climatic conditions and increasing population pressure, problems such as desertification in these areas are becoming more and more serious. Land desertification affects about 3.6 billion hectares of the world 2 soil of. my country's desertified land accounts for about 27.2% of the country's land area, and it is one of the countries most seriously affected by desertification in the world. The special ecological conditions and natural environment in the arid desert area lead to generally low soil organic matter content, phosphorus and nitrogen deficiency, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G1/00
CPCA01G17/005A01G22/00
Inventor 黄湘马建新李卫红陈亚宁
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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