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韭菜是多年生宿根蔬菜,病虫害较多,只有科学、安全、合理地使用农药,才能有效地控制病虫害的发生与危害。一、虫害韭菜的主要害虫是韭蛆。韭蛆严重危害着韭菜的生长,要根据实际情况,采取措施适时防治。主要防治韭蛆的方法:(1)成虫。韭蛆每年发生5-6代,春、秋季发生最为严重。成虫羽化期一般在4月、9月份。应选择天气晴朗的上午9-10点,每亩喷洒2.5%溴氰菊酯乳油2000倍液。(2)幼虫。药剂灌根,每亩用2%甲基阿维菌素乳油500毫升稀释成1000倍液进行浇灌。
Leek is perennial root vegetables, pests and diseases are more, only the scientific, safe and rational use of pesticides, in order to effectively control the occurrence and harm of pests. First, pests Leek main pests are leek maggots. Leek maggots seriously endanger the growth of leeks, according to the actual situation, take timely measures to prevent and control. The main control leek maggot method: (1) adult. Leek maggots occur 5-6 generations a year, spring and autumn are the most serious. Adult emergence period generally in April, September. Should choose the sunny morning 9-10 points, spraying 2.5% per mu of deltamethrin EC 2000 times. (2) larvae. Pharmacological irrigation root, with 2% per acre with 500mg of avermectin EC diluted to 1000 times for watering.