27.12%碱式硫酸铜SC防治烟草气候性斑点病的田间药效试验

Field Efficacy of 27.12% Copper Sulfate Basic SC Against Climate Spot Disease of Tobacco

摘要: 进行了田间碱式硫酸铜SC不同剂量的药效测定试验。结果表明:27.12%碱式硫酸铜SC对烟草气候性斑点病防治效果显著,施药后其防效均在53.68%~65.60%之间,显著高于生产上常用药剂80%"代森锌"WP的药效。施药适期宜掌握在病害发生初始期,用药方法以600倍液,用药量60 L/667m²,间隔7~10 d连续施药2~3次较为适宜。

Abstract: The efficacy of copper sulfate basic SC at different dosage was determined with field experiments.The results showed that the control efficacy of 27.12% copper sulfate basic SC against the climate spot disease of tobacco ranged from 53.68 to 65.60%,which was much higher than that of 80% zineb WP.It is appropriate to apply at the initial stage of disease occurrence for 2-3 times at 7-10 days intervals,suitable dosage is 60 L/667m² at a dilution of 600.