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螳螂对农民是益虫还是害虫？Is a mantis good or bad for farmers?

杀虫剂也会杀逝世益虫。Insecticides also kill helpful insects.

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花园越多，蜻蜓，蟋蟀和蜜蜂这样的益虫才能有地方繁荣。With more gardens, helpful insects like dragonflies, crickets, and bees would have a place to thrive, too.

玉米被益虫咬了当前，在伤口处会长出一种叫镰刀霉的霉菌。玉米收割后假如存储不当，也会长这种霉菌。When corn is attacked by insects a mold called Fusarium can grow at the site of insect damage and produce fumonisin.

有人担心，抗虫害的转基因作物不仅将害虫杀死，而且有可能连益虫也一起杀死，但到目前为止，这种担心似乎没有根据。So far, fears that genetically modified, pest-resistant crops might kill good insects as well as bad appear unfounded.

在这些垂直花园中也可以发现益虫，包括瓢虫、食虫蝽象以及食蚜蝇科。Beneficial insects can also be found in these vertical gardens including lady beetles, assassin bugs, and syrphid flies.

简单地说，农民们看到益虫往往会将害虫吃掉，如果发生这种情况，农药便成为多余的。Put simply, farmers see that beneficial insects often devour pests, and when this is happening, pesticide is not needed.

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该设计旨在为伦敦动物园引入益虫，且已经赢得了伦敦“走出蜂箱”设计大赛的桂冠。Bug Hotel, which is designed to bring helpful insects into London parks and just won the city of London's "Beyond the Hive" competition.

科学家发现，带有抗虫基因的作物能在土壤里留下毒素，这种毒素既能杀死害虫也能杀死益虫。Scientists have found that a crop with a gene that kills pests can leave a poison in the soil that kills helpful as well as harmful insects.

它们能够带来更优的农作物，减少疾病，通过吸收益虫来有效地控制害虫。These can lead to buy better crops, reduce disease and help with pests conrol pest control by attracting helpful attracting helpful insects.

昆虫性信息素具有专一、高效、无毒、无污染、不伤益虫等优点。In addition, sex pheromone about insect has a focused-purpose, efficient, non-toxic, non-polluting and no hurting to beneficial insects, et al.

对京、津、冀地区的草坪昆虫种类进行了调查，鉴定出害虫8个目16个科，其中益虫6个科。On the basis of investigating lawn insects species in Beijing, Tianjin and Hebei, and 8 Ordos and 16 Familias of pests and 6 Familias of beneficial insects were identified.

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本文对昆虫卵黄蛋白及其激素调控进行了综述。为防治害虫再猖獗的发生和促进大量繁殖益虫提供重要的理论依据。In this article, we reviewed the researches on insect vitellin and its hormonal regulation, which is helpful to understand mechanism of pest resurgence and to control the pests using natural enemy.