XING Huiqin,WANG Xiaoqin,XU Yongfeng,et al.Fungicides for Controlling Sea-buckthorn Dieback[J].Northern Horticulture,2017,41(21):62-67.[doi:10.11937/bfyy.20171272]
防治沙棘枝枯病药剂筛选
- Title:
- Fungicides for Controlling Sea-buckthorn Dieback
- 文献标志码:
- A
- 摘要:
- 以市售各类杀菌剂为供试药剂，以沙棘枝枯病菌和发病严重的沙棘树为作用对象，采用生长速率法和田间喷施法，研究了5种药剂对沙棘枝枯病菌的室内抑菌作用，并将有效药剂进行毒力测定和田间防效试验，以期为沙棘枝枯病的快速防治提供参考依据。结果表明：4种化学农药50%百菌清WP、70%甲基硫菌灵、25%丙环唑乳油、70%百菌清WP和1种微生物农药寡雄腐霉对沙棘枝枯病菌具有明显杀菌作用。25%丙环唑乳油、70%百菌清WP和寡雄腐霉具有良好的抑菌效果，抑菌率在80%以上，药效期也比较长，达7 d以上。其中，25%丙环唑乳油的毒性最好，其次是寡雄腐霉，70%百菌清WP最差。田间防效试验表明，3种农药都可有效控制沙棘枝枯病的发生，施药后的发病率明显低于对照（P<0.05），防治效果达70%以上。因此，这3种药剂可以在生产上推广使用，以快速有效防治沙棘枝枯病。
- Abstract:
- Five fungicides were selected to inhibit the pathogen of sea-buckthorn dieback with inhibition growth rate method in lab.The toxicity of three effective agents was tested by papers on containing toxic media.And the sea-buckthorn dieback was also controlled with the three fungicides by spraying in field.The results showed that four chemical fungicides 50% carbendazim WP,70% thiophanate-methyl,25% propiconazole,70% chlorothalonil WP and one microbial fungicide Pythium oligandrum could remarkably inhibit the pathogen.The inhibiting effects of 25% propiconazole,70% chlorothalonil WP and Pythium oligandrum on the pathogen were best.The inhibition rates were all more than 80%.And the inhibiting time of the three fungicides was longer than others.The toxicity testing of three effective fungicides indicated that the toxicity of 25% propiconazole and Pythium oligandrum was great higher than that of 70% chlorothalonil.The disease incidence of three effective fungicides was obviously lower than CK,and the control efficiency were all above 70%.It was suggested that the three fungicides could be used to control sea-buckthorn dieback disease in the field.
参考文献/References:
参考文献
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备注/Memo
第一作者简介：邢会琴（1975-），女，甘肃山丹人，博士研究生，副教授，现主要从事植物病理学的教学与研究等工作。E-mail:gszyxhq@163.com.