药剂处理对小麦全蚀病防效及其产量因素的影响  

Effects of Chemical Treatment on the Wheat Take-all Control and the Wheat Yield Factor

作　　者：刘卫国 

机构地区：[1]河南省商丘市植保植检站,河南商丘476000

出　　处：《湖北农业科学》2012年第16期3483-3484,3487,共3页Hubei Agricultural Sciences

摘　　要：研究结果表明,采用药剂土壤处理和药剂拌种对小麦全蚀病[Gaeumannomyces graminis(Sacc.)ArX&Olivier var.tritici J.Walker]均表现出较好防效,对小麦产量也有明显影响。不同药剂土壤处理与对照相比,次生根受害症状表现推迟8～10 d,剑蚀消、70%甲基托布津和50%多菌灵防效分别为57.4%、32.9%和21.8%,后期枯穗率与对照枯穗率(0.75%)相比,防效分别为72.0%、66.6%和56.0%;产量与对照相比,分别增产31.1%、22.3%和18.6%。不同药剂拌种处理与对照相比,健禾保根部受害症状表现推迟12 d,其他处理推迟16～18 d;通过次生根受害程度调查,综合处理区平均防效达90.6%,3%敌萎丹、2.5%适乐时、12.5%全蚀净、3%敌萎丹+2.5%适乐时、6%立克莠和健禾保等处理平均防效分别为75.7%、51.2%、83.3%、66.4%、81.7%和57.4%;后期枯穗率与对照相比,平均防效依次分别达到85.3%、80.0%、97.3%、78.6%、84.0%和52.0%;产量表现以2.5%适乐时药剂拌种小麦产量最高,12.5%全蚀净处理小麦产量偏低。Chemical soil treatment and seed dressing had a good control effect on wheat take-all and also could affect the wheat yield. Different chemical soil treatments, like Jianshixiao, 70% Thiophanate Methyl or 50% Carbendazim, could delay damage symptoms of secondary roots about 8N10 days compared with the control group, and the control effects of them were 57.4%, 32.9%, 21.8% respectively; their control effects of the late dry ear rates were 72.0%, 66.6%, 56.0% respectively compared with the control dry ear rate 0.75%; the yield increased 31.1%, 22.3%, 18.6% respectively compared with the yield of the control group. Compared with the control group, Jianhebao could delay damage symptoms of roots 12 days, while other seed dressing methods could delay 16N18 days; the research on the damage degree of the secondary roots indicated that the average control effect was 90.6% in the comprehensive treatment area, and the average control effects of 3% Divi- dend, 2.5% Celest, 12.5% Latitude, 3% Dividend with 2.5% Celest, 6% Raxil or Jianhebao were 75.7%, 51.2%, 83.3%, 66.4%, 81.7%, 57.4% respectively; compared with the control group, the average control effect of the late dry ear rates were 85.3%, 80.0%, 97.3%, 78.6%, 84.0%, 52.0% respectively; seed dressing with 2.5% Celest produced the highest yield, while seed dressing with 12.5% Latitude produced low yield.

关 键 词：药剂处理 小麦全蚀病[Gaeumannomyces graminis(Sacc.)ArX&Olivier var. tritici J. Walker] 防效 产量因素 

分 类 号：S435.12[农业科学—农业昆虫与害虫防治]