Ecological method for treating nitrogen pollution under different habitats by utilizing amphibious plant alternanthera philoxeroides

A technology of lotus philodendron and amphibians, applied in the ecological field of nitrogen pollution, can solve the problems of limited scope of application, secondary pollution, etc., achieve strong absorption capacity, realize rapid reduction, and realize the purification of eutrophication in water bodies Effect

Inactive Publication Date: 2019-11-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are many methods to deal with nitrogen pollution, but the scope of application is limited, and there are certain defects
For example, "A High Nitrogen Contaminated Soil Remediation Agent and Its Preparation Method and Application" disclosed in Chinese patent document CN109400415A, its scope of application is high nitrogen polluted soil, not suitable for other habitat conditions, and has certain limitations, and the method Easy to cause secondary pollution

Method used

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  • Ecological method for treating nitrogen pollution under different habitats by utilizing amphibious plant alternanthera philoxeroides
  • Ecological method for treating nitrogen pollution under different habitats by utilizing amphibious plant alternanthera philoxeroides
  • Ecological method for treating nitrogen pollution under different habitats by utilizing amphibious plant alternanthera philoxeroides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In terrestrial habitats, select soil plots with serious nitrogen pollution, and use 300kg / hm 2 The critical value of the nitrogen fertilizer application rate is calculated according to the standard, and the selected fertilization rate is 4 to 5 times the standard critical value, that is, the nitrogen fertilizer application rate of the selected soil plot is 1200-1500kg / hm 2 ; Randomly select multiple positions in the soil plot for measurement, and the nitrogen content range of the selected nitrogen-polluted soil plot is determined to be 2.58 to 5.28g / kg, and then select four positions with large differences in results, which are recorded as A, B, C, D four regions (concrete data such as table 1); In April, in A, B, C, D four regions, carry out the planting of lily lotus, carry out the cleaning of weeds and the land plot. Turn over and irrigate, and plant Nitrichia chinensis, which can absorb nitrogen, on the soil plot. The planting method is cuttings. Eclipta philodendr...

Embodiment 2

[0035]In the aquatic habitat, select a lake with serious nitrogen pollution, and measure the nitrogen content of the lake at random locations in the lake. The concentration range of total nitrogen in the selected nitrogen-polluted lake is 2.72-5.04 mg / L, showing eutrophication The level of nitrogen pollution is serious, and then four lake areas with large differences in total nitrogen concentration results are selected and recorded as four areas A, B, C, and D;

[0036] Set up a rectangular ecological floating island every 10m in the four areas of A, B, C, and D. The total area of ​​all ecological floating islands accounts for 5% of the total area of ​​the lake; The way of grass is cutting, passing through the ecological floating island so that the stem nodes are in contact with the water surface. The row spacing and spacing of the philodendron are both 40cm; The cloning fragment of node; The cloning fragment is the stolon fragment that is selected from the mature Eclipta chin...

Embodiment 3

[0041] Under the interactive habitat of water and land, select the lakeside area, first plant Lianzia philodendron on the shore of the nitrogen-polluted water body, and after it is established, place the tip of the plant in the nitrogen-polluted water body to make it prostrate on the water surface and form branches Reticular structure; and form a network system of stolons connected with ramets on the shore; materials and water are transferred between the ramets on the shore and the ramets on the water surface through clonal integration.

[0042] The planting method is to cut on the bank, and the philodendron philodendron is a clone fragment containing 3 nodes, and 10 clone fragments are planted per square meter.

[0043] Harvest the aboveground (above water) part, and keep the underground (underwater) part. The planting time span is from April to October of the first year, and harvest once every two months. ) part can survive the winter, and can grow into adult plants in the n...

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Abstract

The invention relates to the field of ecological restoration, in particular to an ecological method for treating nitrogen pollution under different habitats by utilizing an amphibious plant alternanthera philoxeroides. The method comprises the following steps: selecting three nitrogen-polluted habitats, comprising a terrestrial habitat, an aquatic habitat and an amphibious interactive habitat, forplanting alternanthera philoxeroides, limiting conditions such as planting line spacing and the like, and harvesting the plant at regular intervals. The invention solves the problem of nitrogen pollution under different habitats by the ecological method; according to the method, by planting the alternanthera philoxeroides with amphibious habits, vegetative propagation can be achieved through cuttage, the nitrogen absorption capacity is high, and nitrogen pollution conditions under different habitat conditions can be treated; due to the characteristic that the alternanthera philoxeroides growsrapidly through habits such as cloning and integration, the alternanthera philoxeroides can be harvested for multiple times in one year, and rapid reduction of the nitrogen level of soil and purification of water eutrophication are facilitated.

Description

technical field [0001] The invention relates to the field of ecological restoration, in particular to an ecological method for treating nitrogen pollution in different habitats by using the amphibian plant Aurantia philodendron. Background technique [0002] Today, with the rapid development of industrial and agricultural economy, soil pollution is becoming more and more serious. Soil pollution is usually divided into inorganic pollution and organic pollution. When there are too many harmful substances in the soil and exceed the self-purification capacity of the soil, changes in the composition, structure and function of the soil will be caused, microbial activities will be inhibited, and harmful substances or their decomposition and transformation products will gradually accumulate in the soil. → crop → human body" or enter the human body through "soil → water → human body", and then have adverse effects on human health. In modern agricultural production, the use of chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 游文华胡安安张惜嘉任光前杜道林
Owner JIANGSU UNIV
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