芫荽软腐病病原菌生物学特性与药剂筛选

Biology Characters and Bactericide Screening of Pathogen of Coriander Soft Rot

为有效防治芫荽软腐病,对其病原菌进行生物学特性及其药敏筛选试验研究。结果表明:芫荽软腐病病原菌在37℃条件下,土壤pH为7时导致芫荽植株发病加速。在药剂筛选试验中,通过抑菌圈法可知,7种试验药剂中72%农用硫酸链霉素可溶性粉剂、3%噻霉酮可湿性粉剂、53.8%氢氧化铜水分散粒剂、20%噻菌铜悬浮剂均有明显抑菌作用。其中,72%硫酸链霉素可溶性粉剂的抑菌作用最强,最小抑菌浓度为0.031%;其次为3%噻霉酮可湿性粉剂,最小抑菌浓度为0.06%。

For effective prevention and control of coriander soft rot, biology characters and bactericide screening of pathogen of coriander soft rot were studied. The result showed that coriander soft rot could be accelerated plant disease under 37℃ and pH 7.0 of soil. According to bactericide screening, 72 % Streptomycin SP,3% Benziothiazolinone WP, 53.8% Copper hydroxide WDG, 20 %Thiodiazole-copper SC were effected to coriander soft rot. Minimum inhibitory concentration of 72% Streptomycin SP was 0. 031% secondly, minimum inhibitory concentration of 3% Benziothiazolinone WP was 0.06%.