Method for improving heavy metal tolerance of tall fescue by domesticated plant seeds

A technology of plant seeds and tall fescue, applied in the directions of botanical equipment and methods, application, horticulture, etc., can solve problems such as not attracting attention

Inactive Publication Date: 2011-10-19
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, people pay more and more attention to the introduction and domestication of drought-resistant varieties of lawn plants; while other aspects have not attracted attention.
In particular, domestic waste compost contains a variety of high-content heavy metals. Therefore, the work of using it as a substrate environment for turf cultivation to domesticate turf plant species that are enriched and tolerant to heavy metals has not been reported in the literature.

Method used

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  • Method for improving heavy metal tolerance of tall fescue by domesticated plant seeds
  • Method for improving heavy metal tolerance of tall fescue by domesticated plant seeds
  • Method for improving heavy metal tolerance of tall fescue by domesticated plant seeds

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Effect test

Embodiment 1

[0049] (1) The domestication process of domestic waste composting substrate Tall fescue: The domestic waste composting substrate was flatly spread on the experimental ground, and then the compost was compacted and flattened by pressing. The average thickness of the composting substrate was 20cm. The sowing method is spring sowing, and the domestication of tall fescue in fertilizer substrate depends on natural precipitation in each year, and the seeds of tall fescue are harvested after 4 years of domestication;

[0050] (2) The domesticated tall fescue seeds were treated with 130g / m 2 Seeding; culture temperature is 25°C, relative humidity is 40%, mow after 20 days of emergence, stubble height is 2cm; start watering after 5 days containing Cd 2+ 、Cr 6+ 、Cu 2+ , Pb 2+ The four heavy metal solutions were poured three times, and the heavy metal solution was poured every 5 days; the stress concentrations of the four heavy metal ion solutions in the soil reached 30, 600, 600, an...

Embodiment 2

[0052] (1) The domestication process of domestic waste composting substrate Tall fescue: The domestic waste composting substrate was flatly spread on the experimental ground, and then the compost was compacted and flattened by pressing. The average thickness of the composting substrate was 20cm. The sowing method is spring sowing, and the domestication of tall fescue in fertilizer substrate depends on natural precipitation in each year, and the seeds of tall fescue are harvested after 4 years of domestication;

[0053] (2) The domesticated tall fescue seeds were treated with 130g / m 2 Seeding; culture temperature is 25°C, relative humidity is 40%, mow after 20 days of emergence, stubble height is 2cm; start watering after 5 days containing Cd 2+ 、Cr 6+ 、Cu 2+ , Pb 2+ The four heavy metal solutions were poured three times, and the heavy metal solution was poured every 5 days; the stress concentrations of the four heavy metal ion solutions in the soil reached 30, 600, 600, an...

Embodiment 3

[0055] (1) The domestication process of domestic waste composting substrate Tall fescue: The domestic waste composting substrate was flatly spread on the experimental ground, and then the compost was compacted and flattened by pressing. The average thickness of the composting substrate was 20cm. The sowing method is spring sowing, and the domestication of tall fescue in fertilizer substrate depends on natural precipitation in each year, and the seeds of tall fescue are harvested after 4 years of domestication;

[0056] (2) The domesticated tall fescue seeds were treated with 130g / m 2 Seeding; culture temperature is 23°C, relative humidity is 40%, mow after 20 days of emergence, stubble height is 2cm; start watering after 5 days containing Cd 2+ 、Cr 6+ 、Cu 2+ , Pb 2+ The four heavy metal solutions were poured three times, and the heavy metal solution was poured every 5 days; the stress concentrations of the four heavy metal ion solutions in the soil reached 30, 600, 600, an...

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Abstract

The invention relates to a method for improving heavy metal tolerance of tall fescue by domesticated plant seeds. The method comprises the following steps of: sowing the domesticated tall fescue seeds in the soil in a ratio of 130g/m2; Under the condition that the cultivation temperature is between 15 and 25 DEG C and the condition that the relative humidity is 40 to 60 percent, cradling the seedlings when the seedlings come out for 20 days, and keeping the stubble in the height of 2cm; after 5 days, starting to pour the solution containing four types of heavy metals of Cd2+, Cr6+, Cu2+ and Pb2+ to make the threatening concentration of the four types of heavy metals reach 30,600,600 and 600mg/kg respectively; and harvesting the plants on the twenty-fifth day after the cradling, and measuring the concentration change of the Cd2+, Cr6+, Cu2+ and Pb2+ heavy metal ion solution. Tests show that the domesticated tall fescue shows quite good growth increment under the threatening of the heavy metals and is high in heavy metal enriching property, particularly Cd and Pb. Therefore, the tall fescue domesticated by the method can improve the heavy metal enriching property and the heavy metal tolerance and has quite important practical values.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a reasonable and safe use method for composting municipal domestic garbage. More specifically, it is a method of improving the tolerance of tall fescue to heavy metals by domesticating plant seeds. Background technique [0002] Soil heavy metal pollution is an important environmental problem that is becoming more and more serious and needs to be solved. The discovery and utilization of phytoremediation technology has opened up a new way for soil remediation. [0003] In recent years, there have been many researches on phytoremediation of heavy metal pollution at home and abroad, and great achievements have been made. Saifullah (2009) concluded in the article that the success of plant extraction depends on the size of biomass, the concentration of heavy metals in plants and the root concentration. How much of the heavy metals can be used. The bioavailability of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
Inventor 赵树兰多立安
Owner TIANJIN NORMAL UNIVERSITY
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