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近年来,随着韭菜种植面积的不断扩大,韭蛆的危害也日渐加重,一般地块损失10%～20%,个别地块损失达50%以上,严重影响韭菜的品质与产量,当地菜农常用甲胺磷、甲基对硫磷,有的甚至用种衣剂等随浇水灌根的方法防治韭蛆,这几种药剂都是高毒农药,在蔬菜上严禁使用,由于它们毒性大,残留重,食用韭菜造成的中毒事件时有发生,而乐斯本毒性较低,且在韭菜上已获得登记,这为无公害蔬菜的生产打了基础。为验证其对韭蛆的防治效果及适宜用量,2002年进行了田
In recent years, with the continuous expansion of leek planting area, the hazards of leek maggots are also increasing, the general block loss of 10% to 20%, individual block loss of more than 50%, seriously affecting the quality and yield of leeks, local vegetable farmers commonly used Methamidophos, methyl parathion, and some even with seed coating with watering and other methods of prevention and control leek maggots, these agents are highly toxic pesticides, non-use of vegetables, because of their toxicity, Heavy residues, poisoning caused by consumption of chives have occurred from time to time, and Low toxicity toxicity, and has been registered in the leek, which laid the foundation for the production of pollution-free vegetables. In order to verify its prevention and treatment of leek maggots and the appropriate amount of application, carried out in 2002 field