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Coating method for sprouts of submerged plants by using oxygen-containing soil

A submerged plant and soil technology, applied in botany equipment and methods, seed coating/seed dressing, application, etc., can solve problems such as inability to plant roots, lake bottom mud pollution, seedling rot and death, etc., to promote Colonization and rooting ability, no secondary pollution effect

Inactive Publication Date: 2011-08-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the submerged plants reconstructed from seeds have the phenomenon that the seeds cannot be colonized and rooted or the seedlings rot and die. In addition, a large number of pollutants have caused serious pollution of the lake sediment for decades, which has become a major threat of endogenous release and will affect The growth and physiological properties of submerged plants, and the large number of algae blooms in high temperature seasons will cause low dissolved oxygen at the bottom of the lake, all of which bring great difficulties to the recovery of submerged plants.

Method used

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  • Coating method for sprouts of submerged plants by using oxygen-containing soil
  • Coating method for sprouts of submerged plants by using oxygen-containing soil
  • Coating method for sprouts of submerged plants by using oxygen-containing soil

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment one: preparation and coating process of micro-aerobic soil coating agent

[0018] Take the natural soil around the lawn, remove the big stones, spread it out in the sun and dry it in a ventilated place, mix the soil and water at a ratio of 1:2 (V / V), remove the foam, and fill it with micro oxygen bubbles while stirring, Continue for 30 minutes, add diatomaceous earth whose volume is 1 / 4 of the original soil, and stir evenly.

[0019] Soak bitter grass fruit pods collected in the wild in water for 2-3 days, squeeze out or rub out the seeds when the pods are soft, rinse and sieve repeatedly, wash off the jelly, and then soak in water for 2-3 days pre-germination treatment.

[0020] Mix the microaerobic soil suspension mentioned above with the pre-germinated seeds, and the proportion should be fully coated but the buried seed bud embedding depth should not exceed 1 cm after casting, and then the coated seeds are made.

Embodiment 2

[0021] Embodiment 2: Implementation effect of micro-aerobic seed bud coating technology in simulated ecosystem

[0022] In the simulated ecosystem, the substrate is anaerobic lake mud taken from an abandoned reservoir, the substrate is black and has an odor, and the initial Eh is about -180mV; the overlying water is simulated lake water, where TN=6mg / L, TP=0.4 mg / L; the system is fully enclosed, protected from light around, and the light intensity at the top is 166μW / cm 2 , photoperiod L:D=14:10, water temperature 25°C. A control group and a restoration group were set up, and the treatments of throwing ordinary seeds and seedlings coated with microaerobic soil were carried out respectively.

[0023] Before and after spraying microaerobic soil-coated seed buds, the Eh changes of the sediment in the control group and the restoration group were as follows: figure 1 shown. It can be seen from the figure that the micro-aerobic soil-coated seed buds were injected into the simulat...

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Abstract

The invention relates to a reconstruction method for large-sized aquatic plants; particularly, oxygen-containing soil is used for coating sprouts of submerged plants for the restoration of the submerged plants on polluted bottom sediment. Nitrogen, phosphorus and organic matters are removed from soil in a lake basin, and load oxygen of a solid-liquid interface serves as a coating agent through oxygenation treatment, so that the oxidation-reduction environment of the bottom sediment can be improved, the oxygen content of a bottom-layer water body can be improved, and a growth microenvironment independent from the bottom sediment is provided for the sprouts of the submerged plants; the coating agent slowly releases oxygen at the initial stage of the seed germination through different oxygenation methods such as homogenate aeration of the soil at low temperature, the mixing of the soil and oxygen-containing water and the like, so that sufficient oxygen is provided for the sprouts without leading to damage on the plants; clay minerals such as sepiolite, diatomite and the like are added in the coating agent, so that the porosity of rhizosphere can be increased, and the flow of oxygen surrounding the rhizosphere can be improved; and the coated sprouts of the submerged plants can resist against the influence of external disadvantages by the action of the coating agent; therefore, germination, growth and colonization can be quick, and the purpose of reconstructing the large-sized plants is finally achieved. Compared with the prior art, the technology needs low cost, is easy to operate and does not lead to secondary pollution and ecological risks.

Description

Technical field: [0001] The invention relates to a method for coating submerged plant seed buds by using micro-aerobic soil. The invention belongs to the technical field of restoration of submerged vegetation in eutrophic shallow lakes. Background technique: [0002] Eutrophication is the main problem facing the lake water environment today. For a long time, people have been exploring ways to control eutrophic water bodies. Bio-ecological method, also known as green restoration technology, is a method of restoration by using algae-controlling organisms, constructing artificial wetlands or establishing aquatic vegetation, etc., and has become a research hotspot in recent years. [0003] Large-scale aquatic plants are an important part of the lake ecosystem. They have the functions of absorbing and enriching nutrients, filtering rhizosphere, suppressing algae, and reducing sediment resuspension. Therefore, rebuilding aquatic plants and restoring aquatic vegetation are the key...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C1/06
Inventor 潘纲周莹陈灏杨波
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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