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我县地处川北丘陵地医,近来新发展的柑枯园很多,据查这些果园生物群落简单,柑桔红蜘蛛普遍发生。有些果园由于不合理施用农药,杀伤大量天敌,尤其是捕食螨,严重地破坏了天敌群落的建立。而有的果园施药次数较少,则天敌数量丰富。为此笔者总结分析了这些果园的防治经验,提出了保护利用捕食螨、结合施用少量选择性农药、加强果园管理、合理间作、种植和保存有利于捕食螨等天敌生存繁殖的桥梁寄主等综合措施提供参考。
My county is located in northern Sichuan hills medicine, the recent development of a lot of citrus wilderness, it is found that these orchards simple biological community, citrus spider mites commonly occur. Some orchards due to irrational use of pesticides, killing a large number of natural enemies, especially predatory mites, seriously undermined the establishment of natural enemy communities. However, the number of pesticides applied in some orchards is small, and the quantity of natural enemies is abundant. Therefore, the author summed up and analyzed the prevention and control experience of these orchards, put forward the comprehensive measures such as the protection of the use of predatory mites combined with the application of a small amount of selective pesticides, strengthening the management of orchards, rational intercropping, planting and preserving bridge hosts conducive to the survival and reproduction of predatory mites and other natural enemies for reference.