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美国现有两个全国性的生物防治会,即圣保罗联合防治会和菲尔莫尔共同防治会,此外还有Ricon—Vitova天敌出售公司。这些机构专门从事天敌的大量繁殖、利用并使之商品化生产,同时围绕生物防治开展一些综合防治工作。一、圣保罗联合防治会:该会成立于1927年,现有会员275名,受理桔园4800公顷,下设一个施药部,主要生产孟氏隐唇瓢虫,用以防治粉蚧,1976年前还生产了南美粉蚧长南眺小蜂。每年用于生防的经费,四年生以上的桔园折合每公顷10美元左右,四年生以下约2.5美元。1975年每生产1000只
There are currently two national biocontrol conferences in the United States, the Joint Prevention Society of Sao Paulo and the Common Fregal Prevention Association, in addition to the Ricon-Vitova predators. These agencies specialize in the multiplication, utilization and commercialization of natural enemies, and carry out some integrated prevention and control work on biological control. First, the joint prevention and treatment of Sao Paulo: The Association was established in 1927, the existing members of 275, the acceptance of Orange Park 4,800 hectares, set up under a Department of Pharmacy, the main production of Meng clover ladybug, to control mealybugs, 1976 Also produced before the South America mealybug Chang Nanliao Bee. Every year, the funds spent on health prevention and education are worth about 10 U.S. dollars per hectare for four-year-olds and about 2.5 U.S. dollars for students under four years of age. In 1975, every 1000 production