Effects of rhizosphere inoculation with Bacillus licheniformis and Bacillus polymyxa on pepper and cucumber seedling development.

Bacillus licheniformis and Bacillus polymyxa were inoculated by suspensions injection into pepper(Capsicum annuum L.)and cucumber(Cucumis sativus L.)seedling rhizosphere,and the seedling development and their relative physiological targets were analyzed.The results indicated that after rhizosphere inoculation in pepper seedling significantly increased net photosynthetic rate and root vigor,and the absorption of mineral elements such as N,P,K,Ca,Mg,Fe were enhanced.The pepper yield was increased by 29.3 % to 33.3 %.B.polymyxa showed better effect than B.licheniformis.Contrast with pepper,B.licheniformis and B.polymyxa inoculation in cucumber seedling rhizosphere decreased the root vigor,thus remarkably inhibited mineral elements absorption and fruit production.