Medicament for treating dragon fruit canker, screening method and prevention and treatment method

The invention discloses a medicament for treating dragon fruit canker, a screening method and a control method, and belongs to the technical field of agricultural disease control. The method comprises the following steps: treating pitaya seedlings by using a pitaya canker germ spore suspension, then treating the inoculated pitaya seedlings by using a medicament, taking sprayed sterile water as a contrast, investigating the disease infection condition of the pitaya seedlings, calculating the disease infection rate and the disease index, and analyzing the prevention and treatment effect of the medicament on the pitaya canker. The screening method provided by the invention is safe and reliable, can effectively reduce the dosage of chemical pesticides, has the advantages of good treatment effect, high safety and environmental friendliness, and is beneficial to improving the yield and quality of fruits. 本发明公开了一种治疗火龙果溃疡病的药剂、筛选方法与防治方法，属于农业病害防治技术领域。利用火龙果溃疡病病菌孢子悬浮液处理火龙果苗，再利用药剂处理接菌后的火龙果苗上，以喷施无菌水作为对照，调查火龙果苗的感病情况，计算感病率及病