生防菌剂ZY-9-13用量对烟草黑胫病发生的影响  

Effects of Application Rate of Biological Fungicide ZY-9-13 on Occurrence of Tobacco Black Shank Disease

作　　者：薛超群[1] 奚家勤[1] 胡利伟[1] 杨立均 

机构地区：[1]中国烟草总公司郑州烟草研究院 [2]河南省驻马店市烟草公司

出　　处：《烟草科技》2014年第12期71-73,共3页Tobacco Science & Technology

基　　金：河南省烟草公司科技项目"烟草黑胫病生防菌剂的研制及应用(HYKJ201211)";河南省烟草公司科技招标项目"烟草黑胫病防控关键技术研发与应用(HYKJZ201302)"

摘　　要：为探明不同用量的生防菌剂ZY-9-13对土壤中烟草黑胫病菌数量及烟株发病率的影响,通过田间试验测定了生防菌剂ZY-9-13在0,2.25,4.50和6.75 kg/hm2用量下的土壤烟草黑胫病菌数量、烟株黑胫病发病率、病情指数和防治效果。结果表明:随着生防菌剂ZY-9-13用量的增加,土壤中烟草黑胫病菌数量减少,烟草黑胫病的发病率和病情指数降低,防治效果提高。生防菌剂ZY-9-13用量4.50 kg/hm2对烟草黑胫病的防治效果较好。In order to investigate the control effect of biological fungicide ZY-9-13 against Phytophthora parasitica vat. nicotianae, its population density in soil, the disease incidence and index of tobacco plants and control effect were determined by field experiments at ZY-9-13 application rates of 0, 2.25, 4.50, 6.75 kg/hm2. The results showed that with the increase of application rate, the population density of Phytophthora parasitica var. nicotianae in soil, the disease incidence and index decreased, the control effect increased. The control effect peaked at ZY-9-13 application rate of 4.50 kg/hm2.

关 键 词：生防菌剂ZY-9-13 烟草黑胫病 黑胫病菌 发病率 病情指数 防治效果 

分 类 号：S476[农业科学—农业昆虫与害虫防治]