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粉尘剂是一类新型农药,它是利用粉尘的飘翔效应,使农药粉尘颗粒在棚室空间自由地,均匀地落到蔬菜上,起到防治病害的作用。与烟剂相比,粉尘剂具有两大特点:一是不像烟剂那样要求棚室严格密封,大棚薄膜稍有破口也可用,二是避免了烟剂在发烟时,对近旁植株引起的药害和药的有效成分热分解等问题。粉尘剂使用要点如下: 1.药剂选择目前使用的粉尘剂有10%防霉灵粉剂,防治黄瓜霜霉病、番茄晚疫病等;12%克霉灵粉剂,防治黄瓜炭疽病;12%得益粉,防治番茄灰霉病、晚
Dust agent is a new type of pesticide, it is the use of the floating effect of dust, pesticide dust particles in the greenhouse space freely and evenly fall on vegetables, play a role in disease prevention. Compared with the smoke agent, the dust agent has two major characteristics: First, unlike the smoke that requires strict studio sealed, greenhouse film is also a slight break can also be used, and second, to avoid smoke when smoking, the plants near the cause The injury and the active ingredients of the drug pyrolysis and other issues. Dust agent using the points are as follows: 1. Pharmacy options currently used dust agent 10% anti-mildew Ling powder, control cucumber downy mildew, late blight tomato; 12% of kelp powder, cucumber anthracnose prevention and treatment; 12% benefit Powder, control tomato gray mold, late