火龙果溃疡病防治药剂的筛选

火龙果溃疡病是火龙果生产中常见的病害之一,对火龙果产量和品质的影响较大,近年来火龙果溃疡病的发生频率逐年增加.本研究通过菌丝生长抑制法测定9种杀菌剂对火龙果溃疡病病菌的杀菌活性.结果表明,戊唑·咪鲜胺、肟菌·戊唑醇、吡唑·毒氟磷有较强的抑菌作用,EC50分别为0.0209,0.0762,2.0358mg/L,本研究为生产上防治火龙果溃疡病药剂的筛选提供了参考.

Screening of Controlling Agents for Pitaya Ulcer

Pitaya canker is one of the common diseases in the production of pitaya(Hylocereus undulatus Britt)fruit,affecting its yield and quality.In recent years,the frequency of its occurrence has increased year by year.In order to provide a scientific basis for thecontrol of this disease,an experiment was conducted to screeneffective pesticides to be used in pitaya production.The fungicidal activity of nine fungicides against pitayacanker was determined with the mycelial growth inhibition method.The results showed that tebuconazole·prochloraz,trifloxacin·tebuconazole and pyrazole·toxafluphos had strong fungicidal effects,their EC 50 being 0.0209,0.0762 and 2.0358 mg/L,respectively.