68.75%银发利SC对马铃薯晚疫病的防效研究

The Effect of 68.75% Fluopicolide Propamocab Hydrochloride SC on the Prevention of Phytophthorainfestans

采取不同施药方法、不同浓度、不同施药时间研究了68.75%银发利SC防治马铃薯晚疫病的田间试验。结果表明:在播种时用50 mL68.75%银发利SC加细灰3 kg混合均匀后拌在150 kg种薯块上,拌种后的薯块用麻袋或塑料布覆盖12～24 h后播种,在苗期采用1000倍液灌根(每窝用药液约0.2 kg),初花期用1000倍液喷雾,能有效防治马铃薯晚疫病的发生。

The spraying methods, concentrations and application time of this fungicide were examined in the current investigation. The mixture of 50 ml fungicide and 3 kg fine ash was used for 150 kg tomato tubers, fol- lowed by a post-treatment for 12 -24 hours via cover with sacks or plastic film. Subsequently, 1000-time di- lution of IRRIGATING was applied to the root of the young seedling （0.2 kg per seedling）, followed by the dilution spray during the early flowering stage. The above-mentioned method might give the effective proven- tion over this disease.