文献多次证实使用农药引起病虫的猖獗,其原因是毁灭了害虫的天敌。 一、对柑桔锈壁虱的影响 汤普森多毛菌是柑桔锈壁虱唯一有效的天敌,非选择性杀菌剂毁灭了它的天敌,导致了柑桔锈壁虱虫口的增长。在夏天使用杀菌剂防治柑桔脂(黄)斑病时,往往引起柑桔锈壁虱猖獗。在使用含铜杀菌剂后引起锈壁虱虫口的增加;喷洒含锌的营养剂防治缺素症之后,引起锈壁虱虫口的增加。管内试验,发现多种铜素杀菌剂、敌菌丹、苯来特和福美铁对汤普森多毛菌分生孢子生活力有显著的抑制作用,轻油和中油则无影响,作 The literature has repeatedly confirmed that the use of pesticides cause pests and diseases rampant, the reason is the destruction of the natural enemies of pests. First, the citrus rust tick effects Thompson strychnine citrus rust ticks is the only effective natural enemies, non-selective disinfectant destroyed its natural enemies, resulting in citrus rust tick growth. The use of fungicides in the summer to control citrus grease (yellow) spot disease often causes citrus rust ticks rampant. The use of copper-containing bactericides caused the increase of rust-lice insects mouth; spraying zinc-containing nutrients to prevent and cure deficiency-deficiency caused the increase of rust-lice insects mouth. In-tube test, found that a variety of copper fungicides, diterpene, Bennett and the United States Ferrum on the Thompsonomycetes conidia inhibitory activity of vitrification, light oil and the oil has no effect for