新药剂防治加工番茄早疫病药效的研究

The Efficacy of Novel Fungicides to Control Early Blight of Processing Tomato

早疫病是新疆加工番茄的重要病害之一,其叶片、茎秆和果实均受病菌浸染,使果实产量下降,品质变劣。将几种新杀菌剂进行室内抑菌测定,48～120h检查,均以世高有效成分1、10、100mg/l和好力克4.3、43、86mg/l防效最高。田间试验分别在博湖、昌吉、玛纳斯三地进行,25%阿米西达悬浮剂750倍喷雾处理防效最好,而1000倍以及43%好力克悬浮剂3000、4000、5000倍、10%世高水分散剂800倍、70%安泰生可湿性粉剂500倍处理,三地防效均高于对照70%代森锰锌500倍处理。仅世高1000、1200倍、安泰生750、1000倍处理防效在玛纳斯低于或等于对照。

The early blight is one of the important diseases of processing tomato in Xinjiang. The fungus infects the lesves , stalks and fruits, which decrease yield and quality of tomato . In order to better control the disease, some novel fungicides were evaluated in laboratory and tield tests. The experiment that was made in the laboratory in Urumgi showed that Score 10% WG 1, 10, 100 mg/l and Horizon 43% SC 4.3, 43, 86 mg/L from 48～120 hours after treatment provided outstanding inhibetion efficiency to the fungus, followed by Antracol 70% WP 1 400 mg/l. In field tests in Behu, Changji and Manas, Amisto 25%SC 750 tines best controled efficient Efficacy of Amisto 25% SC 1 000 times, Horizon 43% SC 3 000,4 000,5 000 times , score 10% WG 800 times , Antracol 70% WP 500 Times was better than that of Mancozed 70%WP 500 times as a cheak fungicide. Control effecticacy of Score 10%WG 1000, 1200 times, Antracol 70%WP 750,1 000 times is lower than, or equal to that of cheak fungicide in Manas.