据美国有关资料介绍,柑桔皮中含有致死昆虫的物质。用20个左右的柑桔皮兑水0.5公斤,装在玻璃器皿或陶罐内,密封浸泡24小时,然后取出柑桔皮,溶液就是柑桔皮水浸液。浸液浓度越大,防治蚜虫的效率就越高,蚜虫的死亡率可达80—100％,这种柑桔皮浸液对人畜无害,是一项简便易行防治 According to the United States about the information, citrus peels contain dead insects substances. With about 20 citrus peel watered 0.5 kg, mounted in glassware or clay pot, sealed soak for 24 hours, and then remove the orange peel, the solution is citrus peel water immersion. The greater the concentration of immersion, the higher the efficiency of the prevention and treatment of aphids, aphids mortality up to 80-100%, this citrus peel immersion harmless to humans and animals, is a simple and easy to control