福建农业学报 ›› 2013, Vol. 28 ›› Issue (2): 143-147.

• 植物保护 • 上一篇    下一篇

20种杀菌剂对芦笋茎枯病菌的抑制作用及联合毒力

杜宜新, 石妞妞, 阮宏椿, 甘林, 杨秀娟, 陈福如   

  1. 福建省农业科学院植物保护研究所,福建 福州 350013
  • 收稿日期:2013-01-02 修回日期:2013-01-23 出版日期:2013-02-28 发布日期:2013-02-28
  • 通讯作者: 陈福如(1961-)男,研究员,主要从事植物真菌病害及其化学防治研究(E-mail:chenfuru@yahoo.com.cn)
  • 基金资助:

    国家公益性行业(农业)科研专项(201003074-6-1、201003074-4-1);福建省农业科学院青年科技人才创新基金项目(2011QB-16)

Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi

DU Yi-xin, SHI Niu-niu, RUAN Hong-chun, GAN Lin, YANG Xiu-juan, CHEN Fu-ru   

  1. Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China
  • Received:2013-01-02 Revised:2013-01-23 Online:2013-02-28 Published:2013-02-28

摘要: 采用菌丝生长速率法测定20种杀菌剂对芦笋茎枯病菌的抑制作用以及苯醚甲环唑和丙环唑、苯醚甲环唑和嘧菌酯混配后对芦笋茎枯病菌抑制作用的联合毒力。结果表明,咪鲜胺、苯醚甲环唑、氟环唑、戊唑醇、百菌清、噻菌灵对芦笋茎枯病菌的抑制作用强,其中咪鲜胺的毒力最高,EC50为0.035 5 mg·L-1,而代森锰锌、噁霉灵、福美双、嘧霉胺、井冈霉素、硫酸铜钙和氨基寡糖素对芦笋茎枯病菌抑制作用较弱。苯醚甲环唑和丙环唑按照1:1的比例混配后对芦笋茎枯病菌菌丝生长抑制作用的共毒系数(CTC)为123.42,表现为增效作用。苯醚甲环唑与嘧菌酯按照8:5、1:5、1:8的比例混配后抑制芦笋茎枯病菌菌丝生长的CTC分别为164.17、132.91、141.91,也表现为增效作用,其中8:5混配后增效作用最显著。

关键词: 芦笋茎枯病菌, 毒力测定, 共毒系数, 杀菌剂

Abstract: Toxicities of 20 fungicides and co-toxicities between propiconazole or azoxystrobin and difenoconazole on Phomopsis asparagi were determined by the pathogen's mycelium growth rates under treatments. The results showed that prochloraz, difenoconazole, epoxiconazole, tebuconazole, chlorothalonil and thiabendazole had higher toxicities among all, with prochloraz being the strongest showing an EC50 of 0.035 5 mg·L-1. Mancozeb, hymexazol, thiram, pyrimethanil, jinggangmycin, copper calcium sulphate and oligosaccharin were not as potent. The co-toxicity efficient (CTC) between difenoconazole and propiconazole (1:1) was 123.42, suggesting existence of synergism. The synergisms between difenoconazole and azoxystrobin, on the other hand, were reflected by the CTCs of 164.17, 132.91 and 141.91 when their mixing ratios were 8:5, 1:5 and 1:8, respectively.

Key words: Phomopsis asparagi, toxicity, co-toxicity efficient, fungicide

中图分类号: 

  • S435.63