喷施广谱性杀菌剂是保护作物免受植物病原菌侵染的一种主要措施,是种植者为了保持作物高产量和高质量的一项重要农事活动。然而,许多植物病原菌对杀菌剂的抗药性有不断增强的趋势,特别是那些作用于单一靶标部位的化合物。为了延迟抗药性的发展,通常建议混合使用杀菌剂或不同杀菌机制的产品轮换使用,而且每个生长季使用杀菌剂的量和频率应保持在最低限度。尽管如此,病菌对杀菌剂的抗性和不敏感性一直在不断地被遗传和积累,最终导致杀菌剂的杀菌能力明显减弱。近几年 Spraying broad-spectrum fungicides as a major measure to protect crops from plant pathogenic bacteria is an important farming activity for growers to maintain their high yield and quality. However, there is a growing tendency for many plant pathogens to resist biocides, especially those that act on a single target site. In order to delay the development of drug resistance, it is usually advisable to use a mixture of fungicides or products with different sterilization mechanisms on a rotational basis and the amount and frequency of fungicides used during each growing season should be kept to a minimum. In spite of this, the resistance and insensitivity of germs to fungicides have been constantly being inherited and accumulated, leading to a marked decrease in the bactericidal ability of fungicides. recent years