Fly ash improves saline-alkali soil

Sinochem News Network News October 10th, a joint R&D team from the Institute of Process Engineering of the Chinese Academy of Sciences, Northern University for Nationalities and Ningxia Nongken Helan Mountain Farm and Pasture (Co.

In order to solve the problem of coal-burning waste fly ash storage and environmental pollution, the joint research and development team proposed a new idea of ​​harmless fly ash and targeted selective activation for large-area saline-alkali land improvement.

It is understood that the area of ​​salinization in Ningxia is 2.

In view of the large amount of fly ash produced in Ningxia, the traditional way is difficult to absorb, and the large area of ​​saline-alkali land urgently needs to be improved, a new type of fly ash-based soil conditioner is prepared using fly ash modification and multi-nutrient synergistic integration technology , Carry out research on saline-alkali soil improvement system, repair saline-alkali soil, and simultaneously realize bulk consumption of fly ash

Researcher Ma Shuhua from the Institute of Processes of the Chinese Academy of Sciences introduced that the R&D team has established a fly ash base after breakthroughs in multiple core technologies such as low-cost and deep removal of heavy metals in fly ash, directional activation of fly ash, and salt-alkali soil structure reconstruction and nutrient balance.

Through the improvement of the five-month planting season, the pH of the land has dropped to 8.

Ma Shuhua said that the research results can not only improve the saline-alkali soil, increase crop yields, but also absorb a large amount of solid waste from fly ash.

The relevant person in charge of the Ningxia Science and Technology Department said that the development and application of new materials for the improvement of fly ash-based saline-alkali land has a significant effect on crop production and can be used to improve the saline-alkali land in Ningxia Yellow River irrigation areas.