河北蔚县烟草近年来遭受烟草赤星病严重危害，致使烤烟质量下降，减产减值，已成为优质烟生产的一大障碍。为了更好地防治该病，针对外地报导菌核净防效较好这一现实，１９９８年８月安排三个厂家生产的４０％菌核净可湿性粉剂，进行不同浓度的防效及药害田间试验，以有效... Hebei Yuxian tobacco suffered serious damage to tobacco brown spot disease in recent years, resulting in the decline of flue-cured tobacco quality and the reduction of production and impairment, which has become a major obstacle to the production of high-quality tobacco. In order to better control the disease, in view of the fact that the scab of the sclerotium in the field is reported to have a good net defensive effect, in August 1998, 40% of the sclerotinic net WPs produced by the three manufacturers were arranged for different concentrations of the control efficacy and phytotoxicity Field trials to be effective ...