Through field experiments, we studied the effects of some humic materials such as ameliorant composite, turf, and leonardite on soil physical and chemical properties, and crop growth of in saline soil. The results showed that, comparing with control, the soil physical and chemical properties were significantly improved due to humic material application. Corn yield applied ameliorant composite was 30.67% higher than those applied turf and weathered coal.
fields with low production
soil physical and chemical properties