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烟蚜是烟草的主要害虫之一,常群集于烟株顶端嫩叶上为害。受害株烟生长迟缓,并可传播花叶病;烟叶产量降低,品质变劣。为防治烟蚜为害,贵州省安顺地区农业科技人员从当地实际出发,自制了两种土农药——蓖麻叶水和洋葱头水,取得了良好的防治效果。这两种土农药的具体配制方法如下: 一、蓖麻叶水:将鲜蓖麻叶0.5千克放入碓窝内看烂后,再加入水0.5千克,滤去渣子后即成。用的将每0.5干克原液兑水1千克,即可喷
Aphids are one of the major pests of tobacco and often cluster on young leaves on the top of tobacco plants. Victims of tobacco growth retardation, and can spread mosaic disease; reduce the yield of tobacco, deterioration of quality. In order to prevent and cure aphids, the agricultural science and technology personnel in Anshun area of Guizhou province made two native pesticides, castor leaf water and onion water, and achieved good control effects. Specific formulation of these two kinds of pesticides are as follows: First, the castor leaves water: 0.5 kg of castor bean into the popliteal see rotten, then add water 0.5 kg, filtered residue after Serve. With each 0.5 g of stock solution watered 1 kg, you can spray