25%Amistar SC(阿米西达水悬浮剂)在苹果病害管理中的应用

Study on the application of 25% Amistar SC in the management of apple tree diseases

对具有保护和治疗双重功效的仿生性杀菌剂25%AmistarSC(阿米西达水悬浮剂)在苹果病害管理体系中的应用技术和定位进行了探讨。结果表明,25%AmistarSC除对嘎拉品种有药害外,对黄元帅、秦冠、红富士、新红星、北斗、澳州青苹等6个骨干品种均无任何不良影响,使用安全;同时,25%AmistarSC对苹果白粉病、黑星病及斑点落叶病等3种主要病害均具有显著防治效果,使用浓度1500～2000倍,防治效果达80%～90%;在广谱性和防治效果上显著优于目前生产上推广的常用的苯并咪唑类、三唑类及代森类杀菌剂品种。应用时应在发病前或发病初期施药,间隔7～10d喷1次,连喷3～4次为宜,同时宜与具有其他作用机制的杀菌剂,如苯并咪唑类、三唑类等内吸性杀菌剂混用或交替用药。

The application technology of 25% Amistar SC was assessed in integrated fruit protection.This fungicide has both protection and cure function to fruit tree.Research results showed that 25% Amistar SC could be used safely on Huangyuanshuai,Qinguan,Fuji,New Red Star,Beidou,Australian Green Apple,but it was harmful to Gala.Amistar had a great control effect on apple powdery mildew,apple scab and apple Alternaria leaf spot.The control effect was from 80% to 90% when it was used with 1 500 to (2 000) dilutions in field.Inhibitive spectrum and control effect of 25% Amistar SC to fungi of major diseases were better than that of common fungicides like benzimidazole,triadimefon and mancozeb.It could be sprayed every 7-10 days and used continuously for 3-4 times.It also could be mixed with benzimidazole or triadimefon in practice.