Method for restoring magnesium polluted soil through paper mulberries

A technology of polluted soil and tree building, applied in the field of phytoremediation of contaminated soil, can solve the problems of few researches on the remediation of alkaline earth metal contaminated soil, and achieve the effects of rapid natural reproduction and growth, water and soil conservation, and strong germination

Inactive Publication Date: 2015-11-25
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At home and abroad, a lot of research has been done on the phytoremediation of heavy metal and organic pollutant soils. Therefore, there are many technologies that

Method used

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  • Method for restoring magnesium polluted soil through paper mulberries
  • Method for restoring magnesium polluted soil through paper mulberries

Examples

Experimental program
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Effect test

Example Embodiment

[0022] Example 1

[0023] The experimental site is located in the Shenyang Ecological Station of the Chinese Academy of Sciences. The station is located in the center of the Lower Liaohe Plain, about 35km away from the Shenyang city area. It has a warm temperate semi-humid continental climate. Potted plants were used to simulate magnesium pollution of the soil, and the soil was collected at this experimental station. The soil pH is 6.8, organic matter is 2.64%, total carbon content is 17.8g·kg-1, total nitrogen content is 1.1g·kg-1, total phosphorus is 0.35g·kg-1.

[0024] The collected soil is placed in the room to dry naturally, and after a week, it is ground and mixed evenly. Each pot weighs 3240g of uncontaminated soil, and add 360g of magnesium ore dust (or ore, ore collected from the magnesite mining area dump), the magnesium ore dust (mineral powder is MgO, or ore), mix it evenly, Put it in the pot to make the magnesium content in the soil 10%. One Broussonetia papyrifera...

Example Embodiment

[0025] Example 2

[0026] The experimental location is the same as in Example 1.

[0027] The collected soil is placed in the room to dry naturally, and after a week, it is ground and mixed evenly. Weigh 2520 g of uncontaminated soil per pot, add 1080 g of magnesium ore dust (magnesium ore dust is the same as in Example 1), mix them evenly, and put them into the pot. One Broussonetia papyrifera seedling was planted in each pot, and the Broussonetia papyrifera seedling was purchased from Dalian Zhongzhi Environmental Biological Technology Co., Ltd. The slow seedling is first moved into the uncontaminated soil and cultivated in a greenhouse at a temperature of 25-30°C. Watering 1-2 times a week according to the actual soil moisture to ensure that the soil moisture is maintained The field water holding capacity is about 60-80%, and it grows for 30 days. Then transplant it to a pot and add 1000 water. Cultivate in a light greenhouse. The light cycle is 16h / 8h, and the room tempera...

Example Embodiment

[0028] Example 3

[0029] The experimental location is the same as in Example 1.

[0030] The collected soil is placed indoors to air dry naturally, and after a week, it is ground and mixed evenly. Weigh 1800 g of uncontaminated soil per pot, add 1800 g of magnesium ore dust (magnesium ore dust is the same as in Example 1), mix them evenly, and put them into the pot. One Broussonetia papyrifera seedling was planted in each pot, and the Broussonetia papyrifera seedling was purchased from Dalian Zhongzhi Environmental Biotechnology Co., Ltd. The slow seedling is the first to move the seedlings into uncontaminated soil and cultivate them in a greenhouse at a temperature of 25-30°C. According to the actual soil moisture, water 1-2 times a week to ensure soil moisture Keep 80% of the field water holding capacity and grow for 30 days. Then transplant it to a pot and add 1000 water. Cultivate in a light greenhouse. The light cycle is 16h / 8h, and the room temperature is 25°C. Spray 4...

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Abstract

The invention relates to a polluted soil plant restoring technology, in particular to a method for restoring magnesium polluted soil through paper mulberries. Particularly, the paper mulberries are planted in the magnesium polluted soil, and magnesium in the polluted soil is absorbed and used through roots, so that the magnesium polluted soil is restored. According to the method, novel varieties of plant resources are developed for plant restoring of the magnesium polluted soil in the soil, and a good way for being rich is provided; by using the paper mulberries for restoring the magnesium polluted soil, the method is simple to operate, small in work amount, capable of not damaging physicochemical properties of the soil, free of secondary pollution and capable of obtaining good ecological, social and economic benefits while treating the magnesium polluted soil.

Description

technical field [0001] The invention relates to a phytoremediation technology for contaminated soil, in particular to a method for remediating magnesium-contaminated soil by using mulberry trees. Background technique [0002] The development and utilization of mineral resources provides human beings with various materials and energy, but also brings many environmental problems. Soil pollution is a prominent problem in mining activities. Magnesium is an important resource in the fields of metallurgy, building materials, chemical industry, light industry, agriculture and animal husbandry. China's magnesite reserves rank first in the world, mainly concentrated in Haicheng and Dashiqiao, Liaoning. During the mining and sintering of magnesite, a large amount of dust is produced, causing serious pollution to the local atmosphere, soil and ecological environment. Changes in soil physical and chemical properties caused by magnesite dust pollution have led to a sharp decline in the ...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
Inventor 贾春云台培东焦阳李晓军巩宗强刘宛
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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