10种药剂对丁香白粉病的防治效果

Control Efficacy of 10 Kinds of Fungicides to Lilac Powdery Mildew

白粉病是丁香花卉上常见病害之一,为筛选出防治效果较好的药剂,本研究在室内测定不同药剂作用下的孢子萌发抑制率并结合田间小区实验,研究10种杀菌剂对丁香白粉病的防治效果。结果显示:供试10种药剂对丁香白粉病都有较好防治效果;尤其是50%醚菌酯、19%啶氧·丙环唑、46%吡唑·戊甲醚酚、30%苯甲·嘧菌酯都能有效抑制丁香白粉病菌分生孢子的萌发,对田间病害的扩展和危害具有很好的控制和治疗作用,且药剂田间的持效期达20d以上。因此,在田间丁香白粉病发生时,可有效的控制病害的危害。

The powdery mildew is the main disease of lilac.The objectives of this study were to evaluate the control efficacy of 10 fungicides to the lilac powdery mildew by using indoor toxicity tests and field spray control tests.The results showed that:10 fungicides on powdery mildew on Erysiphe syringae-japonicae showed significant control effect.Especially 50%kresoxim-methyl,19%propiconazole,46%pyrazole·amyl ether phenol and 30%difenoconazole-azoxystrobin,they all have protective and therapeutic effect to the disease,and has significant inhibitory effect on spore germination of E.syringae-japonicae.Therefore,the damage of clove powdery mildew can be effectively controlled in the field.