四种杀菌剂对花生白绢病菌的毒力及田间控制作用  

Toxicity and field control efficacy of four fungicides against Sclerotium rolfsii

作　　者：李建涛[1] 范怀峰[1] 王建美[2] 刘峰[1] 

机构地区：[1]山东农业大学植物保护学院,农药毒理与应用技术省级重点实验室,山东泰安271018 [2]山东省泰安市岱岳区农业局,山东泰安271018

出　　处：《中国油料作物学报》2013年第6期686-691,共6页Chinese Journal of Oil Crop Sciences

基　　金：公益性行业(农业)科研专项(200903033)

摘　　要：采用菌丝生长速率法，测定了戊唑醇、咪鲜胺、咯菌腈和醚菌酯对花生白绢病菌的室内毒力；并通过田间小区试验，比较了四种杀菌剂播种期拌种处理及结荚期灌药处理对该病害的田间控制作用。四种杀菌剂对病原菌菌丝生长均表现出明显的抑制作用，其EC。值分别为0．05、0．03、0．22和0．61mg／L。田间试验表明，四种药剂结荚期灌药处理防效均高于播种期拌种处理。其中，戊唑醇处理的防效相对较高，拌种处理防效为62．91％-74．93％，灌药处理防效达到68．60％～82．87％。各药剂处理具有一定的增产效果，且结荚期灌药处理增产率高于拌种处理，戊唑醇处理增产率最高，达到10．74％～11．55％。The mycelium growth rate was used to determine the toxicities of tebueonazole, prochloraz, fludioxo- niland kresoxim -methyl to Sclerotittm rolfsii, and field trials were conducted to investigate the control efficacy of four fungicides by seed dressing and irrigation pier in fruiting stage. Four fungicides could significantly inhibit the mycelia growth of Sclerotium rolfsii, and the ECs0values were 0.05,0.03, 0.22 and 0.61 nlg/L respectively. The control effects of irrigation pier treatments of four fungicides were better than seed dressing in field trials. The con- trol effect of tebuconazole was relative higher,with 62.91 -74.93 % by seed dressing, and 68.60 - 82.87% by ir- rigating pier. All treatments could strongly increase the peanut yield and the growth rare of irrigation pier treatment was higher than that of seed dressing treatment. The yield growth rate of tebueonazole treatment was the highest with 10.74 - 11.55% increase.

关 键 词：花生 白绢病菌 杀菌剂 毒力 田间控制 

分 类 号：S482.2[农业科学—农药学] S565.2[农业科学—植物保护]