玉米苗枯病的发生及药剂处理种子对该病控制作用的研究

Status of Maize Seeding Blight and The Study on Control Effect of Pesticide Seeding Dressing

自 1998～ 2 0 0 2年对鲁西北玉米主产区苗枯病进行了调查研究 ,田间调查表明玉米苗枯病的发生与土壤类型、苗期降雨量、品种抗性及种子带菌率等多种因素有关。病原鉴定结果得知玉米苗枯病是由串珠镰刀菌 (Fusariummonili forme)、禾谷镰刀菌 (Egraminearum)、玉米丝核菌 (Rhizoctoniazeae)等多种真菌引起。药剂拌种可明显减轻病害发生 ,用种子量 0 .15 %的适乐时、卫福、多菌灵拌种防治效果分别为 95 .63 %、92 .82 %、84.3 1% ,尤其使用适乐和卫福处理玉米种子 ,田间出苗率高、苗健壮、叶色浓绿 。

From 1998 to 2002,we had a survey research Maize Seedling Blight in northwest regon of shandong provence.Maize seedling blght had relations with the kind of soil, seedling rainfall,variety diseases resistance and pathogens-carrying percentage of seeds.by the pathogenic identification,It is infected by Frsarirm moniliforme, Egraminearun and Rhizoctonia zeae ect. By seeding dressing with 0.15% mycocide of seeds quantity, including 2.5% ShileshFS, 40% WeifuFS and 50% Bavistin WP, the controlling effects reach 95.63%,92.82%,84.31% in proper order, especially using Shileshi and Weifu, the young plants’centigrade high, healthy seedling, but also atroviens leabes in experimental field with Shileshi and weifu. It is worth spreading and using.