China: Plant detoxification for soil
For the first time in the world, Chinese scientists have launched a pilot plantation project to extract toxic arsenic from farmland.
For the first time in the world, Chinese scientists have launched a pilot plantation project to extract toxic arsenic from farmland.
Pteris vittata L
Chen Tongbin, a researcher at the Institute of Geography and Resources of the Chinese Academy of Sciences (CAS), chaired the construction of three experimental sites in Hunan, Zhejiang and Guangdong to eliminate components. Heavy metals from the soil.
The 1-hectare test site in Hunan was planted with 30 tons of arsenic smoking plants, scientifically known as Pteris vittata L. This plant is capable of removing 10% of arsenic from the soil within a year.
The technique of restoring arable land depends on the poisonous herbs. Heavy metals accumulated by these plants are recycled. The first goal of this technique is arsenic, copper and zinc.
Chen's group is considered to be the leader in the technique of attracting arsenic from the soil that has proven that Pteris vittata L, a fern variety found in southern China, is capable of absorbing arsenic from the soil very strongly.
Statistics show that 20% of China's arable land is polluted with heavy metals, which lose about 10 million tons of grain each year.
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