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Method for improving polycyclic aromatic hydrocarbon polluted soil restoration of lolium perenne through sodium nitroprusside

A technology for polycyclic aromatic hydrocarbons and polluted soil, which is applied in the field of sodium nitroprusside to improve ryegrass to repair polycyclic aromatic hydrocarbons contaminated soil, which can solve the problems of difficult phytoremediation and plant poisoning, achieve low price, prevent soil erosion, and facilitate large-scale treatment Effect

Inactive Publication Date: 2017-07-21
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the toxicity of PAHs to plants makes it difficult to practice phytoremediation in PAH-contaminated areas

Method used

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  • Method for improving polycyclic aromatic hydrocarbon polluted soil restoration of lolium perenne through sodium nitroprusside
  • Method for improving polycyclic aromatic hydrocarbon polluted soil restoration of lolium perenne through sodium nitroprusside
  • Method for improving polycyclic aromatic hydrocarbon polluted soil restoration of lolium perenne through sodium nitroprusside

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The test of embodiment 1 concentration selection

[0024] Adding 100mmol / L PAHs to stress ryegrass, the growth of ryegrass was seriously inhibited. After 10 days of stress treatment, the aboveground biomass and belowground biomass of ryegrass decreased by 46.0% and 44.8%, respectively, compared with those cultured in normal nutrient solution. Randomly divided into 9 groups.

[0025] Method: Prepare sodium nitroprusside solutions with concentrations of 0.02mmol / L, 0.05mmol / L, 0.1mmol / L, 0.20mmol / L, 0.50mmol / L, 0.80mmol / L, 1.60mmol / L, and 3.20mmol / L respectively (SNP) solution, the solution is injected into the sprayer, and sprayed on the leaves; 2 times a day, sprayed for 3 days, and the amount of spraying is based on the fact that the leaves are moist and not dripping. The result is as Figure 1-Figure 5 .

[0026] PAHs-contaminated soils have different degrees of inhibitory effects on the growth of most plants. The results of this experiment also showed that 100mmo...

Embodiment 2

[0029] The selection of embodiment 2 spraying objects

[0030] Adding 100mmol / L PAHs to stress ryegrass, the growth of ryegrass was severely inhibited. After 10 days of stress treatment, the aboveground biomass and belowground biomass of ryegrass decreased by 46.0% and 44.8% respectively compared with normal nutrient solution culture. Randomly divided into 4 groups.

[0031] Method: Sodium nitroprusside (SNP) solution, 5mmol / L ethylenediaminetetraacetic acid (EDTA) solution, 5mmol / L diethylenetriaminepentaacetic acid (DTPA) solution, 5mmol / L Citric acid (CA) solution was injected into the sprayer for foliar spraying; spraying twice a day for 3 days. The result is as Figure 6-Figure 7 .

[0032] Ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA) and citric acid (CA) are often added in the form of external sources due to their characteristics of easy biodegradation, low biological toxicity and low environmental risk. Enhance the extraction of ...

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Abstract

The invention relates to a method for improving polycyclic aromatic hydrocarbon polluted soil restoration of lolium perenne through sodium nitroprusside. According to the adopted technical scheme, a sodium nitroprusside solution with the concentration being 0.1-0.5 mM is adopted for leaf surface spraying; spraying is conducted in the seedling stage of the lolium perenne, and usually the date is selected between May and June; rainless whether is selected, and the spraying time is 2-4 days; spraying is conducted for 2-4 times every day, and usually, spraying is conducted before eight o'clock in the morning and after 17 o'clock in the evening; and the spraying quantity adopts the standard that leaves are moist and do not drip water. The lolium perenne is processed by adoption of the method, and thus polycyclic aromatic hydrocarbon polluted soil restoration of the lolium perenne can be remarkably improved; and the method has the characteristics that the working procedure is simple and easy to operate, secondary pollution is avoided, and cost is low, and large-area processing is facilitated.

Description

technical field [0001] The invention relates to a method for using sodium nitroprusside to increase ryegrass to restore polycyclic aromatic hydrocarbon-contaminated soil, in particular to a method for increasing ryegrass to restore polycyclic aromatic hydrocarbon-contaminated soil by spraying sodium nitroprusside solution. Background technique [0002] Ryegrass (Lolium perenne L.) likes light and shade, likes warmth and humidity, has strong cold resistance, poor drought tolerance, good regeneration, is more resistant to trampling and barrenness, and has strong adaptability to soil. It can be planted on various lawns. has wide application value. In China, Japan, South Korea, North Korea and the United States, it is widely used in the open green spaces of cities and parks, the establishment of sports field lawns, and as soil and water conservation plants. It is a world-recognized excellent cool-season turfgrass. [0003] Polycyclic aromatic hydrocarbons (PAHs) are a class of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00A01C21/00A01G1/00
CPCB09C1/105A01C21/00A01G20/00A01G22/00B09C2101/00
Inventor 李悦于宁陈忠林徐苏男姜磊
Owner LIAONING UNIVERSITY