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怎样自制灭菜青虫的农药

更新时间: 2020-10-05 00:00:00     

1、黄瓜蔓喷雾:将新鲜黄瓜蔓,加少许水捣烂,滤去残渣,用汁液加3倍水喷洒,也可防治菜青虫和菜螟虫,防治效果达百分之九十五。

2、辣椒水喷雾:用新鲜红辣椒0.5公斤,捣烂加水5公斤,加热煮1小时,取其滤液喷洒,可防治菜青虫、菜螟虫等。

3、石灰水治虫:用百分之一至3百分之三石灰水溶液喷雾,1周内可除去虫卵百分之五十以上,持续5天效果可达百分之八十以上。

关键词: 怎样 自制 菜青虫 农药

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