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Water depth optimization and rapid recovery method for Scirpus planiculmis wetland under saline-alkali stress

A technology of flat stalk thorn grass and optimization method, which is applied in the fields of botanical equipment and methods, root crop cultivation, soilless cultivation, etc., can solve problems such as restricting the restoration effect of degraded wetlands, and achieve good effect and increase the effect of accumulation.

Inactive Publication Date: 2020-02-07
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently when wetland vegetation restoration is carried out, the impact of burial depth and water level fluctuations on the aboveground biomass and bulb biomass are mainly considered. The optimum water level restricts the restoration effect of degraded wetlands to a certain extent

Method used

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  • Water depth optimization and rapid recovery method for Scirpus planiculmis wetland under saline-alkali stress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The method of the present invention for optimizing the water depth of the Scrub wetland under the salt-alkali stress includes the following steps:

[0027] (1) Excavate the S. flat stalk bulbs in the distribution area of ​​Goose Head Soaked S. stalks in the west of Jilin, and store them in the dark and moist to obtain the flat stalks of S. stalks to be planted;

[0028] (2) Rinse the bulbs with consistent, healthy and complete growth, place them in a seedling bowl, water them daily to maintain a water depth of 0–2cm in the bowl, and grow seedlings in the greenhouse to obtain 2–5cm high S. chinensis seedlings;

[0029] (3) Sow the seedlings of Scirpus rubrum in a culture bowl with a height of 13 cm and an inner diameter of 14 cm, filled with 10 cm high water-washed sand;

[0030] The seedlings of Scirpus rubrum are buried at a depth of 2–3cm, and 5 bulbs are planted in each culture pot;

[0031] Put the culture bowl into a large water tank (300L), add 0, 2.5, 5, 10, 20g kg respect...

Embodiment 2

[0036] This example specifically illustrates the experimental results of the water depth optimization method in Example 1 and the rapid recovery method of the S. flat stalk wetland.

[0037] The size of above-ground biomass indicates the ability of plants to obtain resources such as light and oxygen. To a certain extent, the size of underground biomass is mainly determined by the size of bulbous biomass, and bulbous bulb represents the resource storage capacity and progeny reproduction ability of S. Therefore, the water depth at which both the above-ground biomass and the underground biomass are relatively large is used as the optimal water level for the growth of S. scoparia under various salinity concentrations.

[0038] figure 1 Listed are the above-ground biomass and underground biomass of Scirpus sibiricum treated by the method described in Example 1. The different lowercase letters in the figure indicate the difference between the biomass on the grassland and the biomass of ...

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Abstract

The invention relates to a water depth optimization and rapid recovery method for a Scirpus planiculmis wetland under saline-alkali stress. The method includes collecting Scirpus planiculmis corms forseedling raising, sowing the seedlings in different culture bowls, placing the seedlings in a water tank to build a water depth gradient, and adding a Hoagland semi-nutrient solution with different concentrations of NaHCO3+NaCl for culture; and after the culture, measuring the aboveground and underground biomass of Scirpus planiculmis, and analyzing the optimum water depth for the growth of the Scirpus planiculmis under different saline-alkali concentrations. The results show that when the saline-alkali concentration is lower than 10 g kg-1, the water depth of -5-0cm is the optimum water depth for the growth of the Scirpus planiculmis; and when the saline-alkali concentration is larger than 10.0 g kg-1, the Scirpus planiculmis can no longer survive, the soil needs to be improved firstly and then the Scirpus planiculmis or other plants suitable for survival is planted. By studying the influence of water depth on the growth of the Scirpus planiculmis under different saline-alkali stressdegrees, the optimal water depth for the growth of the Scirpus planiculmis under different saline-alkali concentrations is determined, the biomass accumulation of the concentrations is effectively improved, and the rapid colonization and recovery of Scirpus planiculmis population are facilitated.

Description

Technical field [0001] The invention belongs to the technical field of ecological restoration, and specifically relates to a method for optimizing the water depth and rapid restoration of a scabella wetland under salt-alkali stress. Background technique [0002] Bolboschoenus nipponicus (Bolboschoenus nipponicus) is a perennial herbaceous plant belonging to the genus Scirpus in the Cyperaceae family. It is found in marshes and shallow waters. The western wetland of the Songnen Plain is a globally endangered species-the white crane (Grus leucogeranus) must pass through on the north-south migration route in the spring and autumn. There are large areas of flat stalk grass, and its underground bulb is the main food plant for the white crane. . Therefore, the area and growth status of S. scoparia populations in this area are closely related to the fate of Siberian Cranes. In addition, the S. marsh wetland is also a key primary producer of the salt marsh wetland, which is vital to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00A01G22/25
CPCA01G31/00A01G22/25
Inventor 刘莹汤旭光姜明吕宪国娄彦景丁智
Owner SOUTHWEST UNIV