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害虫的抗药性在我国各地都有不同程度的表现,据报道,目前我国已产生抗药性的害虫有30多种,其中农业害虫占多数。如菜青虫对敌百虫产生了抗性,三化螟对杀螟松产生了抗性,棉蚜、棉红蜘蛛对多种有机磷农药产生了抗性。据测定,使用内吸磷农药防治蚜虫,每年防治7-8次,持续 8-9年,蚜虫的抗性可增150倍以上。抗药性是害虫对药剂的适应性。害虫的抗药性分自然抗药性和获得抗药性两种、自然抗药性又叫耐药性,获得抗药性是由于使用农药而发展
The resistance of pests has shown varying degrees in different parts of China. According to reports, there are over 30 kinds of pests that have developed resistance in our country, of which agricultural pests account for the majority. For example, Pieris rapae was resistant to trichlorfon, and the resistance to the fenitrothion was found on the stem borer. The aphids and spider mites resistant to various organophosphorus pesticides. It is determined that the use of phosphorus insecticides within the control of aphids, 7-8 times a year prevention and control for 8-9 years, aphid resistance can be increased 150 times more. Resistance is the pest’s adaptability to the agent. Pest resistance divided into two natural resistance and drug resistance, also known as natural resistance to drug resistance, access to drug resistance is due to the use of pesticides and development