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[目的]炭疽病是信阳茶树的主要病害,明确吡唑醚菌酯、苯醚甲环唑、氢氧化铜等几种杀菌剂对其的防治效果。[方法]于2015年间隔7 d连续施药2次,第2次施药后7、14、28 d分别对几种杀菌剂的防治效果进行比较分析。[结果]各药剂对该病均有一定的防治效果。其中,25%吡唑醚菌酯乳油的防效最好,其84、168 g a.i./hm~2处理在第2次施药后7、14、28 d的防治效果达到75.34%~87.94%;10%苯醚甲环唑水分散粒剂的防效次之,68 g a.i./hm~2处理在第2次施药后7、14、28 d的防治效果达到70.33%~80.87%。[结论]两种药剂对茶树安全,可以在生产中使用。
[Objective] Anthracnose was the main disease of tea trees in Xinyang, and the prevention and control effects of several fungicides such as pyraclostrobin, difenoconazole and copper hydroxide were clarified. [Method] The pesticides were continuously applied twice a day at 7 days in 2015 and the control effects of several fungicides at 7,14 and 28 days after the second application were compared. [Results] All the agents have certain preventive and therapeutic effects on the disease. Among them, 25% pyraclostrobin EC had the best control effect. The control effect of 84,168 g ai / hm ~ 2 treatment reached 75.34% ~ 87.94% at 7,14,28 d after the second application. The control effect of 10% difenoconazole dispersible granules was the second, and the control effect of 68 g ai / hm ~ 2 reached 70.33% ~ 80.87% at the 7th, 14th and 28th d after the second application. [Conclusion] The two medicaments are safe to tea tree and can be used in production.