（1Chengdu Agricultural College，Chengdu 611130，Sichuan，China；2Chengdu Cologne Modern Agricultural Service
Company，Chengdu 610066，Sichuan，China；3Horticultural Research Institute of Sichuan Academy of Agricultural Sciences，
Chengdu 610066，Sichuan，China；4Plant Protection Station of Sichuan Agricultural and Rural Aff airs Department，Chengdu
610041，Sichuan，China；5Plant Protection and Plant Inspection Station of Chengdu Xindu Agricultural and Rural Affairs
Bureau，Chengdu 610500，Sichuan，China）
Abstract：Taking pakchoi variety‘Xiamanduo’as test material，this paper studied the control effect
of biocontrol bacteria（live spores 10 billion · g-1Bacillus subtilis WP）combining with soil conditioner as a
comprehensive treatment model on club root disease by fi eld experimental method．The results showed that the
treatment of B.subtilis coating agent+soil coditioner+300-fold diluents of B. subtilis irrigating root had the best
eff ect on controlling club root disease，reaching 93.56%．The incidence rate and disease index of club root
disease were all remarkably lower than that of the other treatments．While the biomass of pakchoi and control
eff ect of club root disease were all signifi cantly higher than that of the other treatments．
