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使用化学农药防治作物害虫,不仅药难买、价格高,而且污染环境、对人畜不安全。利用蔬菜制取农药喷杀害虫,省事省钱,施用效高。下面介绍几种方法,供农友一试。韭菜一公斤,加水一百克,捣烂取汁做原液,每公斤原液加清水八公斤喷洒,防治红蜘蛛、棉蚜虫,效果达百分之九十以上。丝瓜加少量水捣烂,去渣取原液,每份原液加一十三份清水和少量肥皂液混匀喷洒,防治菜青虫、红蜘蛛、麦蚜、菜螟虫等,有效率达百分之九十以上。南瓜叶加少量水捣烂取原液,二份原液加三份水和少量肥皂液混匀喷洒,防治蚜虫效果达百分之九十左右。
The use of chemical pesticides to control crop pests, not only hard to buy, high prices, but also pollute the environment, insecure to humans and animals. Use of pesticides to produce pesticides to kill pests, save money and money, the application of high efficiency. Here are some ways for farmers to try. Leek a kilogram, add water, one hundred grams, smashed juice to do the stock solution, each kg of liquid plus eight kilograms of water spray, control spider mite, cotton aphids, the effect of more than ninety percent. Loofah plus a small amount of water smashed to the slag to take the stock solution, each stock plus a dozen of water and a small amount of soap mixed spray, control Pieris rapae, spider mite, wheat aphids, vegetable stem borers, the effective rate of 9% Ten or more. Pumpkin leaves add a small amount of water smashed take the original liquid, two liquid plus three parts of water and a small amount of soap mixed spray, control aphids effect of about ninety percent.