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A treatment method for improving the remediation efficiency of Photinia fragrans on soil heavy metal pollution

A treatment method, heavy metal technology, applied in the restoration of polluted soil, etc., can solve the problems that have not been found to alleviate the stress of heavy metals, and achieve the effect of improving efficiency

Active Publication Date: 2019-02-05
浙江红叶园艺有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no research has been found on the application of exogenous NO to Photinia fragrans to relieve heavy metal stress.

Method used

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  • A treatment method for improving the remediation efficiency of Photinia fragrans on soil heavy metal pollution
  • A treatment method for improving the remediation efficiency of Photinia fragrans on soil heavy metal pollution
  • A treatment method for improving the remediation efficiency of Photinia fragrans on soil heavy metal pollution

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Experimental program
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Effect test

Embodiment 1

[0031] The soil to be repaired was collected from Chunjian Township Mine, Fuyang City, Zhejiang Province. The sampling depth was 0-20cm. The soil was air-dried at room temperature and passed through a 4mm sieve for later use. After determination, the physical and chemical properties of the tested soil are as follows: pH (H 2 O) value 5.82, organic matter content 20.87g / kg, CEC value 10.13cmol / kg, lead (Pb) 85.64mg / kg, cadmium (Cd) 5.84mg / kg, copper (Cu) 79.78mg / kg, this experiment uses the greenhouse Soil culture potted plants, mix the air-dried test soil evenly, pack separately, 3kg / pot, transplant the plant seedlings of Photinia fruticosa (the variety is Red Robin) with uniform growth into the test soil, water moderately, and after 30 days The plants survived stably, and the EDTA solution of 20mmol / L was sprayed in the soil, and the spraying amount was 200ml / kg, during which routine watering and maintenance were carried out.

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Abstract

The invention provides a treatment method for improving heavy metal polluted soil remediation efficiency through photinia serrulata. The method comprises the following steps: a, transplanting photinia serrulata saplings to the heavy metal polluted soil, and spraying an EDTA (Ethylene Diamine Tetraacetic Acid) solution to the soil at the root parts of the photinia serrulata saplings after the photinia serrulata saplings live stably; b, spraying 100ml sodium nitroprusside with the concentration of 0.01 to 0.2mmol / L to the soil at the root part of each photinia serrulata sapling after 0 to 48 hours; c, spraying 20ml sodium nitroprusside with the concentration of 0.01 to 0.2mmol / L to the leaves of each photinia serrulata sapling after 5 days. The method has the main effect that the heavy metal polluted soil remediation efficiency can be obviously improved on the premise that the ornamental value of the photinia serrulata is not influenced.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal environmental pollution, and in particular relates to a treatment method for improving the remediation efficiency of Photinia fragrans on soil heavy metal pollution. Background technique [0002] Soil is the means of production necessary for the survival and development of human beings. With the deepening of industrialization and the intensification of unreasonable human activities, a variety of pollutants containing heavy metals enter the soil through various channels. lead to the enrichment of corresponding heavy metals in the soil. The soil mainly contains lead (Pb), cadmium (Cd), mercury (Hg), copper (Cu), zinc (Zn) and metalloid arsenic (As). Heavy metal elements are stable, easy to accumulate and difficult to remove in soil, and can endanger human health through the food chain. Major pollution incidents such as the "cadmium rice" incident and the "blood lead incident" ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 余鸿钧阮家钊陈春梅吴中杰熊铁强汪善兴
Owner 浙江红叶园艺有限公司
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