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甜芦粟虫害怎么防治
更新时间: 2020-05-31 00:00:00  

1、甜高粱含糖度高,易受蚜虫危害,在天气炎热干旱时易发生,应及早防治。防治方法:若发现蚜虫,用溴氰菊脂、氯氰菊脂或无公害农药按比例喷洒防治,同时配合药剂喷施新高脂膜800倍液提高药剂有效成分利用率,巩固防治效果。

2、若发现有螟虫危害心叶时,即按比例喷施溴氰菊脂,若螟虫已进入甜高粱秆内危害时,可在心叶处撒数粒呋喃丹防治;甜高粱抽穗后,螟虫上到穗部为害,可按比例施溴氰菊脂加新高脂膜800倍液,并在甜高粱孕穗期喷施壮穗灵能强化农作物生理机能,提高受粉、受精、灌浆质量,增加千粒重。

关键词: 虫害 怎么 防治

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