月季枯枝病调查及针对性药剂筛选

Investigation of Chinese Rose Blight and Screening of Tarfgeted Fungicides

枯枝病是三门峡市月季生产中的一种新发病害,发病严重者引起植株枯死,大大降低了月季的观赏价值。为有效控制该病的发生与危害,笔者进行室内抑菌试验和农药防治试验,结果表明:①三门峡市月季枯枝病2017-2019年发生量、发生程度逐年加重,月季在高湿、干旱环境胁迫下,植株抵抗力下降,易发病;②80%多菌灵Wp25×抑菌效果最好,抑菌效果达99.63%, 75%百菌清Wp500×抑菌效果次之,为74.28%,其他药剂抑菌效果对较差;③药剂对比试验证明25%多菌灵Wp300×、50%退菌特Wp1 000×防治效果好,对月季枯枝病具有良好的保护作用和治疗作用。

Shoot blight is a new disease in rose production,which causes the plants to die,and greatly reduces the ornamental value of rose.The indoor bacteriostatic and pesticide control experiments were conducted to effectively control the occurrence and harm of the disease.Results showed that the occurrence rate and degree of the disease increased year by year during 2017-2019 in Sanmenxia under stress of high humidity and drought,with easy occurrence and decrease of resistance to the disease;80%Carbendazim WP25×had the best bacteriostatic effect,with bacteriostatic effect of 99.63%,followed by 75%chlorothalonil WP25×,with bacteriostatic effect of 74.28%,while the other fungicides had the lowest effect;The control effect of 25%Carbendazim WP300×and 50%cholorpromazine WP 1,000×was good,which had good protective and therapeutic effect on rose blight.