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变叶木有虫子了怎么办
更新时间: 2020-10-29 00:00:00  

变叶木长虫了,确定虫害,然后喷药进行防治。

1、介壳虫防治方法:可用软刷轻轻刷除,再用水冲洗干净;介壳虫多时,及时喷洒狂杀蚧800-1000倍液,对介壳虫特效,一般一次用药即可达到防除效果;

2、蚜虫防治方法:蚜虫少时,可用毛笔蘸水刷掉,并及时将刷下来的蚜虫集中消灭;蚜虫大量时,以喷施40.7%乳油稀释1000-2000倍液喷雾进行防治,每隔7-10天喷洒1次,连续3-4次效果极佳;

3、红蜘蛛防治方法:可喷洒1000倍乐果、20%三氯杀螨醇乳油1000倍液进行防治,每隔5-7天1次,连续2-3次即可灭杀干净;

4、黑霉病防治方法:可人工擦洗或喷施必菌鲨800-1000倍液、70%甲基托布津等药剂进行防治;

5、炭疽病防治方法:及时剪去病叶,并集中烧毁,以减少病源;严重时,喷洒50%多菌灵1000倍液或70%甲基托布津1000倍液进行防腐,2-3次后即可见效。

关键词: 虫子 怎么办

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