Called glacial rock flour, the silt is crushed to tiny particles by the weight of the melting ice.

这种泥沙被称为冰川岩粉。它被融化的冰压碎成微小的颗粒。

Researchers from the University of Ghana were able to increase corn production by 30 percent using glacial rock flour.

加纳大学的研究人员利用冰川岩粉将玉米产量提高了30%。