韭蛆的防治研究

Study on the Control of Chinese Chive Maggot (Bradysia odoriphaga Yang et Zhang)

研究韭蛆在天津市的发生规律 ,特别是成虫在保护地蔬菜的活动规律 ,在此基础上提出以药杀成虫代替目前的药杀幼虫的防治思路 ,并从理论和具体措施上进行了系统的研究 ,获得了理想的结果 .所研制的 韭蛆散

Chinese chive maggot(Bradysia odoriphaga Yang et Zhang) is the main underground pest of Chinese chives. The output and quality of Chinese chive are determined by the control of Chinese chive maggot. At present,the control measure is to kill harmful underground larvae by using pesticide, but this measure still have some deficiencies: 1.Since larvae at later stage of growth can strongly resist the pesticide, the control effect is poor. 2.After being absorbed and decomposed by the soil, the pesticide's effect will clearly decline. 3.The pesticide being used is poisonous and forbidden to use on vegetables, thus a hidden danger of slow poisoning, acute poisoning and poisoning after eating Chinese chives exist. By researching on the biological character of this pest, the author discovered that its adult bears such weak points as poor living ability, small range activity and feeble resistance to the action of the pesticide. On this basis, the author put forward an idea of shifting from the control of larvae to the control of adult and made years of research on it. The ‘Jiu Qu San’ powder developed by the author can effectively control Chinese chive maggot in spring, summer, autumn and winter on favorable times and has achieved satisfactory results. Besides, this powder is low in cost, convenient and safe in use, so it can completely replace the present control measure.