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🦗 蚱蜢

一种以植物为食的昆虫，会对农作物造成损害。

蚱蜢

蚱蜢是咀嚼式昆虫，后腿粗壮，适于跳跃。大多数种类无害，但少数种类能在几天内将田地里的作物吃光。最可怕的是蝗虫，它们在拥挤的情况下会改变习性，形成遮天蔽日的蝗群。

蝗灾爆发与天气密切相关。温暖干燥的春季有利于蝗虫生存，而干旱则使植被集中分布，为蝗虫幼虫的聚集创造了有利条件。沙漠蝗虫在北非和中东地区繁殖，由于一群沙漠蝗虫一天就能吃掉相当于一座小城市所需的粮食，因此联合国粮农组织对其进行监测。

控制选项

蚱蜢也是野生动物的食物来源，并有助于草原养分循环。我们的目标很少是彻底根除蚱蜢，而是将其数量控制在不会影响农作物生长的水平以下。

Comments (3)

  1. Jorge Mendez
    Grasshoppers destroyed my grandfather's crops one summer. He never forgot it and neither did I, even though I was only six.
  2. Helen T.
    There's a difference between grasshoppers and locusts. Locusts are the swarming phase of certain grasshopper species.
  3. Dana Kirk
    As a kid I used to catch grasshoppers in the field behind our house. Never thought of them as agricultural pests back then.

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