Scientists are planning to release 250, 000 wasps in the North-East region of Thailand to halt a mealy bug infestation that threatens to destroy its lucrative cassava crop.

泰国东北地区的木薯产业利润丰厚，科学家计划在该地释放25万只黄蜂，以期解决粉蚧肆虐、破坏木薯作物的问题。

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