Improving phosphorus availability in saline-alkaline agricultural soils through biochar and phosphorus solubilizing bacteria (PSB) inoculation: a greenhouse experiment.

Phosphorus (P) is an essential element for life on earth and a limiting nutrient for plant growth. However, its availability in saline-alkaline soils is significantly reduced, adversely affecting plant productivity. Saline-alkaline soil is a widespread problem that severely affects plant growth and productivity.