蚜虫的天敌，有蚜虫怎么办

植物图片 2021-02-22 13:29

蚜虫的天敌有多种，七星瓢虫，二星瓢虫，异色瓢虫，草蛉，食蚜蝇，丁纹豹蛛，黑食蚜盲蝽等。其中瓢虫一生都是吃食蚜虫的，一只瓢虫一天就可吃掉138只蚜虫。食蚜蝇比瓢虫的捕食量还大，是捕食蚜虫的专家。因此想要防治蚜虫，应保护好天地才行。另外，还可用人工防治以及药物防治的方法。

一、蚜虫的天敌

它的天敌有很多，例如七星瓢虫，二星瓢虫，异色瓢虫等，它们一生都是吃食蚜虫的，一只瓢虫一天就可吃掉138只蚜虫，可谓是蚜虫的克星。还有草蛉，食蚜蝇，丁纹豹蛛，黑食蚜盲蝽等。其中食蚜蝇比瓢虫的捕食量还大，是捕食蚜虫的专家。

二、有蚜虫怎么办

1、保护天敌：既然知道了蚜虫的天敌，想要更好的防治蚜虫就要保护它的天敌。在管理作物或植株期间一定尽量少喷洒广谱性的农药，尤其不可再天敌活动高峰期间喷药，有条件的还可人工饲养释放蚜虫的天敌。

2、人工防治：秋冬季的时候可在树干基部刷白，避免蚜虫产卵。还要结合修剪，将残花，被害的枝梢剪掉，烧毁。落叶后将残枝落叶清理掉，减少越冬的虫卵。平时发现有少量的蚜虫时，就用毛刷蘸水将其刷掉。

3、药物防治：若是发现大量的蚜虫，还是要喷洒药物。药物选吡虫啉，马拉松乳剂或者抗蚜威等就行。也可自己用辣椒水，洗衣粉配制喷洒，效果也比较好。注意喷药时最好加入适量的肥皂水增加粘附力，提高效果。

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