an increasing trendP < 0.05
Significantly, bacterial and fungal Chao I diversity indices showed an increasing trend with biofertilizer application ( P < 0.05), and biofertilizer amendment enriched the rhizosphere soil with beneficial microorganisms that have abilities on promoting plant growth ( Achromobacter and Penicillium ), adsorbing heavy metal ( Achromobacter and Beauveria ), controlling plant pathogen ( Plectosphaerella, Lechevalieria , Sorangium, Phlebiopsis and Beauveria ) and promoting the accumulation of metabolites ( Beauveria and Phoma ).