Method for improving cadmium-contaminated orchard soil remediation capability of solanum photeinocarpum

A technology for cadmium-contaminated soil and flower nightshade, applied in horticultural methods, botanical equipment and methods, horticulture, etc., can solve the problems of decreased cadmium enrichment ability, difficulty in practical restoration, and increased workload, so as to improve the enrichment The effect of gathering ability

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A technology for cadmium-contaminated soil and flower nightshade, applied in horticultural methods, botanical equipment and methods, horticulture, etc., can solve the problems of decreased cadmium enrichment ability, difficulty in practical restoration, and increased workload, so as to improve the enrichment The effect of gathering ability

CN104472175AInactive Publication Date: 2015-04-01SICHUAN AGRI UNIV

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[0032] Example 1: (Mine ecological type less flower nightshade test)

[0033] The place of implementation of the embodiment of the present invention: located in the farm of Ya'an Campus of Sichuan Agricultural University.

[0034] Material: Mining ecotype Solanum nigrum, the seeds of which are taken from the Tangjiashan lead-zinc mine in Hanyuan County, Sichuan. The Tangjia lead-zinc mining area in Hanyuan County, Sichuan Province (east longitude: 102°38′, north latitude: 29°24′) is located in Tangjia Township, Hanyuan County, Ya’an City, Sichuan Province, with an average altitude of 890m. The existing reserves of lead-zinc ore are 1.458 million tons, and the annual mining is 100,000 tons. It has been continuously mined for 15 years, and more than 600,000 m has been accumulated sporadically 3 waste slag. The mining area is located in the mountainous subtropical climate zone between the northern temperate zone and the monsoon zone. It has typical dry and hot valley climate ch...

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Abstract

The invention discloses a method for improving cadmium-contaminated orchard soil remediation capability of solanum photeinocarpum and belongs to the field of remediation of heavy metal pollution environment. The method includes the following steps: planting mining ecotype solanum photeinocarpum in cadmium-contaminated orchard soil by means of direct transplantation or direct seed broadcasting, and after the mining ecotype solanum photeinocarpum enters a rapid growth stage, spraying 1-20umol / L abscisic acid solution on leaf surfaces; at least 30 days after spraying, harvesting overground parts of the mining ecotype solanum photeinocarpum. The method for improving cadmium-contaminated orchard remediation of hyperaccumulator is low in cost, high in operability, environment friendly and effective.

Description

technical field [0001] The invention belongs to the field of remediation of environmental heavy metal pollution, in particular to a method for remediating cadmium-contaminated soil in orchards. Background technique [0002] In recent years, the problem of cadmium pollution has become increasingly serious due to factors such as industrial pollution, farmland irrigation, and agricultural materials. The area of cadmium-contaminated soil in my country has reached 200,000 square kilometers, accounting for 1 / 6 of the total cultivated land area. As a new and environmentally friendly restoration method, phytoremediation is gradually emerging. Phytoremediation is to use specific plants to enrich the ability of specific heavy metals far beyond ordinary plants, enrich the heavy metals in the soil, and finally harvest the plants. Can remove heavy metals from soil. [0003] Solanum photeinocarpum is an annual plant in the Solanaceae family, up to 1 meter high, and is a common orchard...

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Application Information

Patent Timeline

01 Apr 2015

Publication

CN104472175A

IPC: A01G1/00; A01G7/06

CPC: A01G7/06; A01G22/00

Inventors: 廖明安; 林立金