荔枝蝽一年发生一代，农业防治知识！（建议收藏）

植物图片 2023-08-19 16:25

荔枝蝽一年发生一代，以成虫在茂密的叶丛和老叶背上越冬。

农业防治：农业防治主要是人工捕捉。 冬季低温时期（10℃以下），荔枝臭虫被冻住，难以脱去。 它们突然猛烈摇动树枝荔枝叶瘿蚊，越冬成虫落在地上，集中焚烧。

药剂防治：早春越冬成虫大量产卵前喷敌百虫溶液（800～1000倍），消灭越冬成虫。

荔枝蝽一年发生一代，农业防治知识！（建议收藏）

3.症状

1、荔枝蝽成虫和若虫吸取嫩枝、花穗、幼果的汁液，造成落花落果。

2、其分泌的臭液接触雌蕊、嫩叶、幼果等，接触部位枯萎，发生时严重影响产量，甚至籽粒失败。

4、预防方法

1、农业防治：农业防治以人工捕捉为主。 冬季低温时期（10℃以下），荔枝蝽被冻住，不易脱落。 它们突然猛烈摇动树枝，越冬成虫落在地上，集中焚烧。

2、药剂防治：早春越冬成虫大量产卵前，喷洒敌百虫液（800～1000倍液），消灭越冬成虫。 如果第二次喷药，3龄若虫就会被大量消灭。 虫口密度高的地区要全面喷药，虫口密度低、花果树少的地区要重点喷药，大面积连片荔枝区要飞机防治。

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