常见药剂防治湘西猕猴桃溃疡病田间药效试验

Field Efficacy Test of Common Fungicides on Kiwifruit Canker in Xiangxi

为了筛选防治湖南地区猕猴桃溃疡病的高效农药,2019—2020年选用市场上常见的12种杀菌剂,按推荐浓度分别采用喷雾法和涂抹法施用进行田间药效试验。结果表明:同一药剂采用涂抹法施用的防治效果略高于喷雾法,以细刹的防效最好,其喷雾法施用的相对防效最高达88.61%、涂抹法施用的愈合率最高达91.16%;其次是加瑞农、西歌-77和噻森铜;生产中应合理安排细刹、加瑞农、西歌-77和噻森铜交替使用,并配合不同施药方式及相关的农艺措施,避免抗药性的产生,达到更好的防控效果。

In order to screen highly effective pesticides for controlling kiwifruit bacterial canker in Hunan area,12 fungicides commonly sold in the market were selected,and the field efficacy trials were carried out by spray method and smear method according to the recommended concentration during 2019-2020.The results showed that the control effect of smear method was slightly higher than that of spray method for the same fungicide.Benziothiazolinone 30%SC was the best,of which the control effect by spray method was 88.61%,and the healing rate by smear method was 91.16%;the second were kasugamycin+copperoxychloride 47%WP,copper hydroxide 77%WG and thiosen copper 30%SC.In order to avoid the occurrence of drug resistance and achieve better control effects,we should arrange the alternative use of benziothiazolinone 30%SC,kasugamycin+copperoxychloride 47%WP,copper hydroxide 77%WG and thiosen copper 30%SC in combination with different application methods and related agronomic measures.