2024年7月18日 星期一 19:43:55

印尼用黄蜂围剿木薯害虫

        印度尼西亚24日投放大约2000只黄蜂,用以剿杀木薯害虫粉蚧。这种黄蜂长度仅有大约2毫米,幼虫寄生在粉蚧身体里并把它们吃空,因而被称作“环保特警队”,没有污染,对人类和其他动物无害。木薯原产于南美洲,向世界其他地区推广种植过程中,粉蚧“搭便车”在全球扩散。印尼是全球最大木薯种植地之一,每年栽种面积大约为100万公顷。这种农作物在印尼的重要性仅次于大米。粉蚧虽然现阶段在印尼对木薯的危害面积不大,但是如果不加以控制,可能爆发大规模虫害,正如泰国2008年发生的一样。上世纪80年代,在非洲撒哈拉以南地区,人们用黄蜂对付粉蚧,挽回经济损失大约200亿美元。
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