山西农业大学：《农业昆虫学》课程教学资源（PPT课件讲稿）生物防治 Biological Control

Biological Control

Biological Control

The traditional biological control makes use of natural enemy to control pests.Progression technically with science,The contents of the biological control has always been enlarging. 传统的生物防治指利用害虫的天敌来防治 害虫。随着科学技术的不断进步，生物防 治的内容一直在扩充

The traditional biological control makes use of natural enemy to control pests. Progression technically with science, The contents of the biological control has always been enlarging. 传统的生物防治指利用害虫的天敌来防治 害虫。随着科学技术的不断进步，生物防 治的内容一直在扩充

From broad point of view, biological control is the method that makes use of biology and their products 迈入二十世纪 control pests,including 的中国生物防治 the traditional method that makes use of natural enemy and insect's sterility which appeared recent years,make use of hormone and the pheromone of insect

From broad point of view, biological control is the method that makes use of biology and their products control pests, including the traditional method that makes use of natural enemy and insect’s sterility which appeared recent years, make use of hormone and the pheromone of insect

Biological control doesn't pollute environment.It is safe to human, animals and plants.It don't cause agrochemical resistance and harm to natural enemies and other beneficial biology.At the same time,building up species in nature can make themselvies breeding,so the effect will be stable

Biological control doesn‘t pollute environment.It is safe to human、 animals and plants. It don’t cause agrochemical resistance and harm to natural enemies and other beneficial biology. At the same time,building up species in nature can make themselvies breeding, so the effect will be stable

Our country has long history that makes use of biological control. We have a lot of resources of natural enemies and the cost is low,so this method has good foreground

Our country has long history that makes use of biological control. We have a lot of resources of natural enemies and the cost is low, so this method has good foreground

控制害虫密度：控制有害生 保护排斥系统：保护桩物叶 物的种群密度，使之不超过一定 和根周捆的大量有益微生物，利 的阙值。主要途径有保护、利用本 用这些微生物作为活的屏辟，排 地天敌和引进外地天敌。 斥有害生物的侵染。 蚜虫 棉红铃虫 褐飞虱 黏虫 诱导植物的抗性：诱导植物体 使病菌或害虫生病：将“不有基 产生抗性。例如，对蚕豆，黄瓜和香 因”或“自杀基因”导入害虫，使其 瓜，可通过接种产生局部病斑的侵染 不能生有或在有危害能力前就自杀身 因子，诱导植物产生能保护自身免受 亡：人工接种或传播病菌和密虫的致 真菌、细菌、病毒危害的抗性机制。 病病毒，使害虫和病菌死亡

Natural enemies (-The category of the natural enemies Predators:predators distributes in 200 families ,18 orders Parasitoids:Parasitoids distributes in 95 families,18 orders

Parasitoids：Parasitoids distributes in 95 families,18 orders. Predators：predators distributes in 200 families ,18 orders 一 Natural enemies （一） The category of the natural enemies

predators 北京晋之意 lady beetles Goldeneye lacewings feeding-aphid flies robberflies

predators lady beetles robberflies Goldeneye lacewings feeding-aphid flies

Parasitoids Parasitic wasp parasitic fly

Parasitoids Parasitic wasp parasitic fly

(=The using of natural enemies There are three measure in order to protect and make use of natural enemies: (1)Direct protection. Moving the wintering ladybird out of door can decrease its mortality and death rate. 直接保护。越冬瓢虫移到室内保护可以降低 其死亡率

（二）The using of natural enemies There are three measure in order to protect and make use of natural enemies: (1)Direct protection. Moving the wintering ladybird out of door can decrease its mortality and death rate. 直接保护。越冬瓢虫移到室内保护可以降低 其死亡率