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一、粉尘法施药防治。粉尘法用药具有高效、省工、省力,不用水等优点,能够节省农药50％以上.而且药粉分布均匀。此法对大棚密封要求不严格,即使棚膜有破损,也不影响药效。常用的药剂为:5％百菌清复合粉,每亩用量1000克,于早晨或傍晚用喷粉器喷施,能有效防治黄瓜霜霉病、炭疽病、黑星病、白粉病和蕃茄灰霉病。早、晚疫病等病害,每隔7—9天用药一次,连续施药2—3次,防效在90％以上,特别是对黄瓜霜霉病防效高达100％。 二、烟雾剂熏蒸防治。烟雾剂熏蒸也是近年来推广的防治棚室蔬菜病害的一种新技术。此法简便易行,不需任何药械,具有施药均匀、高效、低残留等特点,但对棚室密封要求严格。棚膜及周围不能破损和透气,常用的烟雾剂有45％的百菌清烟雾剂。对
First, the dust method of drug control. Dust law medication has the advantages of high efficiency, labor-saving, labor-saving, without water, pesticide can save more than 50% .And the powder distribution. This law on the greenhouse seal is not strict, even if the film has damaged, it does not affect the efficacy. Commonly used agents: 5% chlorothalonil mixed powder, the amount of 1000 grams per acre, in the morning or evening spraying with a duster, can effectively control cucumber downy mildew, scab, black powdery mildew and tomato ash mildew. Early blight and late blight and other diseases, once every 7-9 days medication, continuous application of drug 2-3 times, the control effect of more than 90%, especially for cucumber downy mildew prevention effect of up to 100%. Second, aerosol fumigation control. Smoke fumigation is also a new technology in the prevention and treatment of greenhouse vegetable diseases in recent years. This method is simple and easy, without any Yaoxie, with a uniform spraying, high efficiency, low residue and other characteristics, but strict requirements on the greenhouse. The film and the surrounding can not be damaged and breathable, commonly used aerosols are 45% chlorothalonil aerosol. Correct