【摘要】 香蕉枯萎病拮抗细菌bio-d4对节瓜枯萎菌的抑菌效果和防治效果的试验结果表明,bio-d4 100倍、200倍、300倍发酵稀释液与节瓜枯萎病菌对峙培养,5 d后在平板上产生明显的抑菌带,抑菌带宽度为9.0～11.8 mm,10 d后仍然保持稳定的抑菌效果;bio-d4发酵原液及50倍、100倍稀释液对孢子萌发具有较显著的抑制作用,抑制率为7.7%～76.4%;bio-d4发酵液100倍和200倍稀释液对香蕉枯萎病的防治效果分别为51.3%、59.4%,显著优于bio-d4的300倍稀释液和常用药剂恶霉灵的防治效果。更多还原

【Abstract】 The antagonistic bacteria strain bio-d4 was tested for its inhibitive efficacies and control efficacy against Fusarium oxysporum Schl.f.sp.benincasae.The results showed that,five days after incubation of the antagonistic strain bio-d4 in 100-,200-,300-fold dilution with the pathogen in the dual test on PDA plates.Inhibitive zones with 9.0～11.8mm width were formed,their inhibitive efficacies maintained stable 10 days after incubation.Antagonistic strain bio-d4 Ferment solution,and with50-,100-fold,can significantly inhibit conidial germination of the pathogen,inhibitive rates getting to 7.7%～76.4%;seven days after application of bio-d4 with 100-fold and 200-fold diluted fermentation solution,the control efficacies are between 51.3%~59.4%,which are significantly stronger than that of its 300-fold diluted fermentation solution other treatments and hymexazol.更多还原