摘要
1986—1989年,调查了上海近郊18个乡235块黄瓜田,枯萎病发病田块占调查总田块数的24.68％,发病率<1.0％的发病田块为70.69％。共采集病样78份。分离获得56个镰刀菌分离物。经鉴定,它们分属镰刀菌属的5个种:尖孢镰刀菌(Fusarium oxusporum)占66.0％;茄病镰刀菌(F.solani)占7.1％;木贼镰刀菌(F.equiseti)占12.5％;半裸镰刀茵(F.Semitecturn)占12.5％;砖红镰刀菌(F.lateritum)占1.8％。黄瓜苗致病性测定结果表明,尖孢镰刀菌较强,茄病镰刀菌弱,木贼镰刀菌、半裸镰刀菌和砖红镰刀菌无致病性。温室药剂筛选结果表明,80％多菌灵可湿性粉剂效果最好。
From 1986-1989, 235 cucumber field plots in 18 villages of Shanghai suburbs were examined for investigating wilt disease. The number of infected plots represented 24.68% of total field plots examined. The number of infected plots with disease incidence<1.0% represented 70.69% of total infected plots. 78 samples of wilt plants infected with Fusarium or other fungi were collected. 56 pure culture isolates of Fusarium were studied for identifiaction. As a result,5 species of Fusarium were identified. The 5 species ranked in order of decreasing occurrence percentage were Fusarium oxysporum (66.0%), F. solani (7.1%), F. equiseti (12.5%), F. semifectum (12.5%) and F. lateriium (1.8%). Virulence test of the 5 species on cucumber seedlings showed that F. oxysporum was relatively virulent, F. solani weakly virulent and the other species were not virulent. The screenig test of 8 fungicides in glasshouse for controling cucumber with disease caused by F. oxysporum, showed that carbendazim (80%WP) was most effective.
出处
《上海农业学报》
CSCD
1990年第2期57-62,共6页
Acta Agriculturae Shanghai
