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经室内饲养和室外调查观察，初步摸清了甜莱夜蛾的发生规律和防治对策。甜菜夜娥在我市一年发生5代，7～8月危害棉花，以第3代为主，幼虫共5龄，2龄前群集危害，3龄后分散危害，并危害加重，抗药性增强成虫表现昼伏夜出，趋光性强，趋化性较弱。防治策略抓住2龄前的适期防治，狠治第3代，兼治其他代。防治方法以化学药剂防治为主；并结合灯光诱杀；以及做好灌溉或中耕等农业措施。
After indoor rearing and outdoor investigation, we initially found out the rule of occurrence and control measures of the insect. Beet Yee occurred 5 times a year in our city in one year, from July to August cotton damage to the third generation of the main larvae a total of 5 years old, 2 years old cluster of hazards, 3 years after the dispersion of hazards, and increased harm, enhanced resistance to adults Performance nocturnal, phototropism, chemotaxis is weak. Prevention and control strategies to seize the appropriate prevention and treatment before the age of 2, ruthless governance of the third generation, and treat other generations. Prevention and control methods to chemical control based; combined with light trapping and killing; and agricultural practices such as irrigation or cultivation.