然而，这种方法已经导致了害虫对杀虫剂的抗药性，同时也已经给人类健康和环境造成了严重的负面影响。
However, this approach has led to the evolution of resistance to pesticides and has severely negative impact on human health and the environment.
缺点：污染环境，杀伤天敌，害虫抗药性产生，导致次要害虫上升为主要害虫。
Weakness: the pollution of the environment, killer predators, pests drug-resistant produce, cause secondary pests for the main insect pests rise.
本文简要阐述了昆虫抗药性的历史演变、分子机制及害虫的抗性治理。
This paper briefly describes the historical evolution of insect resistance, molecular mechanisms and pest resistance management.
文章主要阐述害虫抗药性与生物适合度和适合度代价的关系以及适合度代价产生的机制、特性及影响因素。
The relationship between insect resistance and fitness or fitness cost of resistance, the mechanism, characteristic and the influence factors for fitness were introduced.
由于长期使用某些化学农药，使害虫产生了抗药性。
Also, long application will enable injurious insects to get drug-resistant.
为此，人们不得不进行有害生物抗药性的研究，而害虫抗药性的研究则一直是有害生物抗药性研究中最活跃的领域。
Therefore people have to study the pest resistance, and insect pests resistance to insecticides is the most active study in this area.
农药喷得越多，连害虫都有了抗药性，怎么办？
The more pesticide sprayed, the stronger pests' drug resistance gets.
上述组合物克服和延缓了害虫的抗药性，扩大了防治谱，杀螨迅速，降低了用药成本，减轻了毒性。
The composite overcomes and defers the drug fastness of pests, expands controlling spectrum, kills acarids quickly, reduces pesticide cost and alleviates toxicity.
这对降低防治成本，扩大防治范围，延缓害虫抗药性的产生具有重要意义。
This finding is of great significance in reducing the cost of control, extending the scope of control and delaying the development of insecticide-resistance of the pest.
这对降低防治成本，扩大防治范围，延缓害虫抗药性的产生具有重要意义。
This finding is of great significance in reducing the cost of control, extending the scope of control and delaying the development of insecticide-resistance of the pest.
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