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如何保护七星瓢虫

更新时间: 2020-07-01 00:00:00     

七星瓢虫是著名的害虫天敌,它可捕食麦蚜、棉蚜、桃蚜、介壳虫、壁虱等害虫。这些害虫在植物的茎叶上繁殖生长,吸允植物的汁液,使花蕾脱落,果实减少。七星瓢虫找到蚜虫等害虫密集的地方,挨个把蚜虫一只一只地吃掉。一只七星瓢虫平均每天吃掉一百多只,在它近八十天地生命期里,可取食上万只蚜虫,从而大大减轻树木、瓜果及各种农作物遭受害虫的损害,被称为“活农药”。

1、先大力宣传,从小孩抓起,让小孩子从小有保护益虫的意识;

2、七星瓢虫可以消灭害虫,减少喷洒农药,从而保护了环境;

3

关键词: 如何 保护 七星 瓢虫

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