戊唑醇与羟菌唑对小麦赤霉病的田间防效试验  

Chemical control of Fusarium head blight on wheat

作　　者：韩青梅[1] 康振生[1] 段双科[2] 黄丽丽[2] 

机构地区：[1]西北农林科技大学生物技术中心,陕西杨凌712100 [2]西北农林科技大学植物保护学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2005年第10期11-15,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家"十五"攻关项目(2001BA509B03);国家杰出青年基金资助项目(30125031)

摘　　要：2001～2003年,对不同药剂防治小麦赤霉病的效果进行了田间试验研究.结果表明,接种前2,3 d和接种后2,3,5 d喷施三唑类杀菌剂,与接种未喷药对照相比,戊唑醇可使小麦赤霉病病情指数减少76.47%～78.67%,籽粒中毒素含量减少64.19%～81.39%,增产10.81%～21.15%;羟菌唑可使小麦赤霉病病情指数减少74.64%～82.06%,籽粒中毒素含量减少42.43%～88.01%,增产11.01%～13.35%;大田示范试验中,处理区小麦赤霉病病情指数比对照区平均减少91.92%;对照药剂多菌灵与利德隆对小麦赤霉病也有很好的防治效果.The effects of different chemical substances on infection and mycotoxin production of Fusarium graminearum in wheat were investigated in field trials for 2 years. The result showed that,with fungicide treatment either 2 and 3 days before or 2,3 and 5 days post inoculation,Tebuconazole reduced the disease index of the spikes by 76. 47%-78. 67% and the toxin deoxynivalenol （DON） in the grain by 64.19%-81.39% as well as increased grain yield by 10.81%-21.15% in comparison to the untreated control. Metaconazole led to decreases of the disease index by 74.64%-82. 06% and the DON content in the grain by 42.43 %- 88.01% and increased grain yield by 11.01%- 13.35 % compared with the untreated plants. In the large area trials ,the disease index reduced 91.92% averagely after treated with metaconazole. Fungicides Carbendazim and Lidelong have good effects in controlling the Fusarium head blight.

关 键 词：小麦赤霉病 化学防治 脱氧雪腐镰刀菌烯醇(DON) 戊唑醇 羟菌唑 多菌灵 利德隆 

分 类 号：S435.121[农业科学—农业昆虫与害虫防治]