不同药剂对海南茄子青枯病病原菌的室内药效测定

Efficacy of Different Fungicides for Hainan Eggplant Wilt Pathogens by Laboratory Screening

茄子青枯病是茄子生产上最重要的病害之一,该病会严重影响茄子的产量和质量.本研究采用水平扩散法,利用当地市场上常用的11种防治青枯病的药剂通过室内评价对茄子青枯病菌进行了抑菌实验研究.试验结果表明在推荐的稀释倍数下,仅农用硫酸链霉素对青枯病原菌的表现抑菌效果,在稀释1500-2500倍时的平均抑菌直径在2.0 cm左右,在稀释2500倍(当于28.8 ug/ml)依然表现出抑制效果.此外,枯草芽孢杆菌在稀释200-1000倍时的平均抑菌圈直径在1-1.5 cm之间,在高浓度时表现出一定的抑制效果.该研究结果为当地田间茄子病害防治提供了参考.

Eggplant Wilt disease, one of the grave diseases of Eggplant, seriously reduces fruit yield and ap- pearance quality. Efficacy of 11 bactericides common in the local market against R. Solanacearum was tested by using Horizontal diffusion method in laboratory. The results showed that only streptomycin in the general dilution has antibacterial effect against R. Solanacearum , with the average diameter about 2.0 cm of inhibitory of R. Solanacearum in dilution from 1500 to 2500 times. When being diluted to 2500 times （ in 28.8ug/ml）, the streptomycin still had the inhibitory effect. In addition, the average inhibition diameter of Bacillus subtilis diluted from 200 -1000 times ranged from 1 to 1.5cm, with a certain inhibitory effect at higher concentration. The results provide the reference for the prevention and the control of the R. Solanacearum for the local eggplant planting.