烟田治蚜与防病(CMV)效果研究再报

The second report on study of field controls over Myzus persicae (Sulzer) and their reductive effect on CMV incidence of tobacco

经多年多点试验，明确了在烟田进行治蚜仅对降低烟蚜种群数量效果显著，而对防治ＣＭＶ等蚜传口针系病毒病没有效果；分析了银膜驱蚜及麦套阻蚜防病的原因所在。主张在当前既无抗病品种又无较好药剂的情况下，防治ＣＭＶ等蚜传口针系病毒病应以驱（避）前期有翅蚜为主，采取多种措施提高烟株前期抗（耐）病能力为辅的防治策略。

The study was repeated at several locations for years.The results indicated that the chemical methods controlling aphid in tobacco fields had a significant effect only on reducing varieties and amount of Myzus persicae.No reductive effect of the methods was observed against virus diseases introduced by aphid such as CMV.The accounts of disease reducing effects of aphid exclusive measures of silvery film covering and interplanting with wheat were analyzed.Since neither resistant cultivar nor effective chemicals was available,the authors suggested that,to control aphid probe introduced virus disease such as CMV,the principal measures should be cultural practices which have exclusive effect on winged aphid in the early growing stages of tobacco plants,and supplemented with other measures to improve disease resistance ability of tobacco plants in the early stages of growth.