康乃馨锈病病原鉴定及药剂筛选  

Identification of the pathogen of carnation rust and chemical screening

作　　者：陈刚[1,3] 梁巧兰[1] 徐秉良[1] 徐琼[2] 彭志云[2] 

机构地区：[1]甘肃农业大学草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续发展研究中心,甘肃省草业工程实验室,兰州730070 [2]兰州市农业科学研究所,兰州730070 [3]甘肃省干旱生境作物学重点实验室-甘肃省作物遗传改良与种质创新重点实验室,兰州730070

出　　处：《植物保护》2013年第3期161-166,共6页Plant Protection

基　　金：国家自然科学基金项目(30671267,31060261);甘肃省科技厅自然科学基金项目(1010RJZA164)

摘　　要：通过鉴定发现引起甘肃省康乃馨锈病的病原为石竹单胞柄锈菌(Uromyces dianthi Niessl.);分别采用孢子萌发法和田间喷雾法、灌根法对防治康乃馨锈病的药剂进行了室内筛选和田间药效试验。结果表明,12.5%烯唑醇可湿性粉剂、25%嘧菌酯悬浮剂等7种药剂对康乃馨锈病夏孢子的萌发抑制率均超过50%;对筛选出的7种药剂进一步进行田间药效试验,发现采用喷雾法时12.5%烯唑醇可湿性粉剂、25%嘧菌酯悬浮剂和10%苯醚甲环唑水分散粒剂三种药剂的防效高于其他几种药剂,分别达70.2%、68.3%和65.0%,而灌根法对康乃馨锈病的防效并不理想,最高防效仅为8.1%。The pathogen of carnation rust in Gansu Province was identified to be puccinia single cell （ Uromyces di- anthi Nicssl. ） ; Laboratory experiments and field tests were conducted to screen effective fungicides against carna- tion rust by spore germination, field spraying, and irrigation root methods. Laboratory experiments showed that 12.5% diniconazolc WP, 25% azoxystrobin SC and other 5 kinds of fungicides could inhibit the urediospores ger- mination by over 50%. Field tests indicated that control efficacy of 12.5% diniconazole WP, 25% azoxystrobin SC and 10% difenoconazole WG was higher than that of other fungicides by spraying method, with efficiency of 70.2%, 68.3 % and 65.0%, respectively. However, control effect by irrigation root methods was poor, with a maximal efficiency of 8.1%.

关 键 词：康乃馨 锈病 病原鉴定 药剂筛选 

分 类 号：S436.81[农业科学—农业昆虫与害虫防治]