摘要
采用室内生长速率法测定了7种杀菌剂对金钱树疫病病原菌棕榈疫霉(Phytophthora palmivora Butler)的抑制作用。结果表明:0.15%四霉素水剂的抑制效果最好,EC50值为0.0457μg/mL,EC90值为0.2174μg/mL;其次为6.25%精甲.咯菌腈悬浮种衣剂和50%烯酰吗啉水分散粒剂,抑菌效果显著,前者的EC50值为0.0758μg/mL,EC90值为2.4683μg/mL,后者的EC50值为0.3407μg/mL,EC90值为2.0794μg/mL;22.7%二氰蒽醌悬浮剂、80%代森锰锌可湿性粉剂和50%氟码.乙铝可湿性粉剂对菌丝生长也有一定的抑制作用,其EC50值分别为0.1382μg/mL、2.3796μg/mL和5.4602μg/mL;72.2%霜霉威盐酸盐水剂的抑制效果最差,EC50值为498μg/mL。在供试的7种杀菌剂中,性价比以80%代森锰锌可湿性粉剂最高,其次为50%烯酰吗啉水分散粒剂。
Laboratory toxicity tests of seven fungicides to Phytophthora palmivora Butler were carried out using the methods of mycelium growth.The results showed that 0.15% tetramycin AS had the best control effect,its EC50 was 0.0457 μg / mL and EC90 was 0.2174 μg / mL.However,6.25% metalaxyl-M ＋ fludioxonil FS and 50% dimethomorph WDG also had the prominent effect.The former EC50 was 0.0758 μg / mL and EC90 was 2.4683 μg / mL.The latter EC50 was 0.3407 μg / mL and EC90 was 2.0794 μg / mL.And it also showed that 22.7% dithianon SC,80% mancozeb WP and 50% flumorph ＋ fosetyl-aluminium WP had some inhibitory actions on mycelium growth.Their EC50 were 0.1382 μg / mL,2.3796 μg / mL and 5.4602 μg / mL.72.2% propamocarb hydrochloride AS showed poor results,its EC50 was 498 μg / mL.80% mancozeb WP had the high rate of costs and then was 50% dimethomorph WDG in the seven fungicides.
出处
《江西植保》
2011年第1期25-27,共3页
Jiangxi Plant Protection
关键词
金钱树
棕榈疫霉
毒力测定
生长速率法
Zamioculcas zamiifolia
Phytophthora palmivora Butler
Laboratory toxicity tests
mycelial growth rate methods
