Method of ecologically restoring red mud stacking area by utilization of Arundo donax
A technology for ecological restoration and red mud piles, applied in the fields of land preparation methods, botanical equipment and methods, applications, etc., can solve problems such as red mud piles that have not yet been found, achieve simple and easy colonization process, improve physical and chemical properties, and reduce salt. effect of alkali
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Embodiment 1
[0020] In April 2016, purchase 30cm×25cm (diameter×height) flower pots (with trays), first add organic fertilizer (pig manure) 8-10cm thick, then add red mud 8-10cm thick, and then mix reeds with soil Bamboo bag seedlings and ryegrass bag seedlings (one of which is planted in the middle of the flower pot, 4 bags of ryegrass seedlings are planted around the reeds), and finally add red mud until it is about 1cm below the mouth of the pot and proceed as usual Watering management. Among them, the red mud was collected from the red mud storage yard of Guangxi Branch of Aluminum Corporation of China (pH 11.76, organic matter content 6.37g·kg -1 ).
[0021] After 3 months of routine management, both arundinacea and ryegrass grew well. The average height of arundinacea was 1.5m and the height of ryegrass was 30cm. Take the red mud from the rhizosphere of Arundo arundinacea. The measured pH value is 9.47-10.09 and the organic matter content is 23.70-27.84g·kg -1 .
Embodiment 2
[0023] In this example, the red mud storage yard of the Guangxi Branch of Aluminum Corporation of China Limited (west of Pingguo County, Baise City) was taken as the research object. The red mud storage yard occupies 1,200 mu in the first phase, 900 mu in the second phase, and 2000 in the third phase. mu.
[0024] In order to reduce the amount of red mud and increase the storage height, the company adopts dry storage. The red mud of this storage method is strongly alkaline (pH 11-12), and the organic matter content is extremely low (5-7g kg -1 ), and it is hard, easy to harden, poor water permeability, large temperature difference between day and night, etc., which is very unfavorable to the survival and growth of plants. To this end, the company adopted the planting technology of foreign soil. The selected plants were mainly Wedelia chrysanthemum. In addition, some species of reed, Imperata cylindrica, Albizia julibrissin were also tried to grow. These plants are either invasive...
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