released February 10, 2021
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Once barren saline-alkali land has been metamorphosed into a golden landscape of rice fields in Cixi, Zhejiang province [Photo/thehour.cn]
BEIJING -- Chinese researchers have developed a precise saline-sodic land improvement method to reduce the inhibition of the salts on soil productivity.
The researchers from the Northeast Institute of Geography and Agroecology of the Chinese Academy of Sciences conducted field experiments and improved the soil quality with site-specific management practices. The soil exchangeable sodium percentage and pH were reduced, while the hydraulic conductivity of the soil was increased.
Previously, they also developed integrated modes of reclamation and utilization of the saline-sodic soils which have been promoted in over 1 million mu (about 67,000 hectares) in west Jilin province, Northeast China.
The west of Songnen Plain in northeast China has about 56 million mu saline-sodic land, with high pH value and low water and air permeability.
The traditional method of reducing salinity by irrigation with diversion water used to receive limited crop yield. Scientists have been trying to figure out how to turn barren, salty soil into arable land.
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