本试验主要调查了四川绵阳地区甜叶菊叶斑病的发病规律;采用叶面喷雾法,测定多菌灵、乙基托布津、代森锌、粉锈宁、百菌清防治甜叶菊叶斑病的效果。结果表明：①绵阳地区甜叶菊叶斑病在6月中旬开始出现,6月下旬为发病高峰,病情指数为28.3。②在试验药剂中,相同稀释度75%百菌清,50%乙基托布津,65%代森锌防治效果相似,显著优于50%多菌灵和15%粉锈宁。%The occurrence regularity of leaf spot disease of Stevia rebaudiana Bertoni were surveyed at Mianyang, Sichuan in this experiment, and Zineb, Carbendazim, Thiophenateethyl, Chlorothalonil were used to evaluate effects against leaf spot disease of Stevia rebaudianai. The results were that： ①the occurrence regularity was that it began to occur in the middle of June, the latter half of June was the peak season, and the average field disease index was 28.3 ; ② the control effects of 75% by Chlorothalonil WP ,65% by Zineb WP（ 可湿 性粉）, 50% by Thiophenateethyl WP , 15% by Triadimefon WP and 50% by Carbendazim WP.
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