几种杀菌剂对桃褐腐病的毒力测定及田间控制作用  

Toxicity and Field Efficiency of Several Fungicides against Peach Brown Rot

作　　者：周莹[1] 严红[1] 关海春 董思佳 乔广行[1] 张帆[1] 

机构地区：[1]北京市农林科学院植物保护环境保护研究所,北京100097 [2]大连市农业科学院果树研究所,辽宁大连116036

出　　处：《农药》2013年第10期771-772,779,共3页Agrochemicals

基　　金：国家桃产业技术体系建设专项经费资助(nycytx-31);北京市科技新星计划资助项目(2009B28)

摘　　要：[目的]筛选防治大连地区桃褐腐病的有效药剂。[方法]用菌丝生长速率法测定了70%甲基硫菌灵WP、250 g/L嘧菌酯SC、400 g/L克菌·戊唑醇SC及80%克菌丹WG与430 g/L戊唑醇SC(质量比5∶1)混剂对桃褐腐病菌室内抑制作用,并进行了田间药效试验,质量浓度分别为875、167、400、800、143 mg a.i./L。[结果]4种杀菌剂对该菌的EC50值分别为0.35、111.63、0.72、0.25 mg a.i./L;田间防效分别为86.51%、88.44%、70.51%和68.78%。[结论]甲基硫菌灵、复配杀菌剂克菌·戊唑醇对大连地区桃褐腐病菌具有较强毒力,可作为常规药剂与其他杀菌剂交替使用。[Aims] The study aims to evaluate the control effect of several fungicides on the peach brown rot in Dalian. [Methods] Mycelium growth method was used to measure and compare the toxicities of thiophanate-methyl 70% WP, azoxystrobin 250 g/L SC, Tebu-C 400 g/L SC and the mixtures of captan 80% WG and tebuconazole 430 g/L SC with ratios of 5 ： 1 to Monilinia, meanwhile, the field control were conducted as well. [Results] The ECs0 values of 4 fungicides were 0.35, 111.63, 0.72 and 0.25 mg a.i./L respectively. Four fungicides showed good control effect to the peach brown rot in field trial, with 86.51, 88.44, 70.51 and 68.78%, respectively at the concentration of 875, 167, 400, 800 and 143 mg a.i./L, respectively. [Conclusions] Thiophanate-methyl 70% WP and captan 80% WG display better controlon peach brown rot in Dalian, they can be applied alternately with other fungicides.

关 键 词：桃褐腐病 杀菌剂 毒力 田间试验 

分 类 号：S436.621.1[农业科学—农业昆虫与害虫防治]