烤烟赤星病的防治药剂及施药时期  

Fungicides of Controlling Alternaria alternata and Their Applying Time

作　　者：唐明[1] 程智敏[1] 陈叙生[1] 向金友[2] 谢冰[2,3] 蔡毅[1] 黄胜[1] 杨苹[1] 杨懿德 杨洋[2] 易蔓[2] 饶在生[2] TANG Ming CHENG Zhimin CHEN Xusheng XIANG Jinyou XIE Bing CAI Yi HUANG Sheng YANG Ping YANG Yide YANG Yang YI Man RAO Zaisheng(Yibin Academy of Agricultural Sciences, Yibin, Sichuan 644600, China Yibin Tobacco Company, Yibin,Sichuan 644600, Chi- na College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China)

机构地区：[1]四川省宜宾市农业科学院,四川宜宾644600 [2]四川省烟草公司宜宾市公司,四川宜宾644600 [3]四川农业大学农学院,四川成都611130

出　　处：《天津农业科学》2017年第7期80-83,共4页Tianjin Agricultural Sciences

基　　金：四川省烟草公司项目(川烟科[2014]6号)

摘　　要：针对宜宾烟区烤烟赤星病发生严重的问题,为筛选出对烤烟赤星病防治效果较好的化学药剂和施药时期,研究了不同药剂和不同施药时期对烤烟赤星病发生情况的影响。结果表明,10%多抗霉素对烤烟赤星病防治效果最好,40%菌核净次之,50%氯溴异氰尿酸最差。施药时期以旺长末期开始施药效果最好,下部叶成熟期次之,团棵期最差。综合考虑病情指数和产值,以10%多抗霉素(1 000倍液)在旺长末期开始施用(即处理2,A1B2)对烤烟赤星病的防治效果最好,烤烟单位产值最高,为45753.75元·hm^(-2),比最低的处理10(A4B1)增值22.89%。In view of the serious problem of tobacco brown spot in Yibin tobacco-planting areas, for screening out the good fungicide and applying period to control Alternaria alternate, the effects of different fungicides and different application periods on the occurrence of A. alternate were studied. The results showed that the control effect of 10 ﹪ polyoxin was the best, followed by 40%dimetachlone, the 50 ﹪ chloroisobromine cyanuric acid was the worst. The best period of beginning to apply fungicides at the late fast growing stage, followed by the mature stage of lower leaf, the rosette stage was the worst. Based on comprehensive consideration of the disease index and output value, the best effect against A. alternate was the 10 ﹪ polyoxin（1 000 times） applying at the late fast growing stage（treatment 2, A1B2）, and the highest yield was 45 753.75 yuan·hm-（-2）, which was 22.89 ﹪ higher than the lowest treatment10（A4B1）.

关 键 词：烤烟 赤星病 杀菌剂 施药时期 防治效果 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]