Now being widely released for biological control of aphids and scale insects.

现在正被人们广泛释放用来防治蚜虫和蚧虫等害虫。

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Aphid is one kind of destructive pest in agricultural production. For a long time, the prevention and control of aphids has been mainly depended on chemical pesticide.

蚜虫是一种严重危害农业生产的害虫，长期以来，对蚜虫的防治主要依靠化学农药。

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Fungal pathogens are important natural biological control agents of aphids.

病原真菌是蚜虫的重要自然控制因子。

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The ladybird has been introduced in Holland as a biological control to get rid of sap sucking pests like aphids.

BBC: NEWS | UK | Northern Ireland | Hunt on for 'deadly ladybird'