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利用植物材料灭蚜虫,安全无副作用,不污染环境,能大量节省防治费用,防治效果也不错,现推荐几种方法。 1、取20～30个柑桔的皮研碎,放置在密封的容器中,加5倍水浸泡一昼夜,过滤后的浸出液可有效杀死果树和其他农作物的蚜虫。浸出液的浓度越大,杀虫效果也越好,一般要连喷两次以上。
The use of plant materials off aphids, safety and no side effects, do not pollute the environment, can save a lot of cost control, prevention and control is also good, we recommend several ways. 1, take 20 to 30 citrus skin crushed, placed in a sealed container, add 5 times the water soak for a day and night, filtered leachate can effectively kill fruits and other crops of aphids. The greater the concentration of leachate, the better insecticidal effect, the general spray even more than two.