杂草抗药性的形成、作用机理研究进展

The Form and Mechanism of Resistant Weeds to Herbicide

杂草抗药性的形成主要由杂草本身的生物学、遗传学特性和外界因素除草剂的选择压及单一的种植制度造成;抗性形成的速度则与除草剂的选择压、抗性基因的起始频度、杂草的适合度和杂草的种子库寿命有关;抗性机制主要有除草剂代谢作用的增强、作用位点的改变和对除草剂的屏蔽或作用位点的隔离;抗药性杂草的治理应采取综合防治措施,包括农田检疫、合理使用除草剂、科学的种植体系、生物防治及除草剂抗性作物的利用等。

The form of resistant weeds is mainly because of its own biological and genetic characteristics, selection pressure of herbicide and single plant system. The development speed of resistance weeds relies on the factors of the selection pressure of herbicide, initial frequence of resistant genotypes, the fitness and the seed bank lifetime of weeds. The major resistance mechanism is to strengthen metabolism, change the action site and isolate herbicide or action site. To resistance weeds, it should be employ comprehensive approach, including quarantining of fields, appropriate using of herbicide, scientific planting system, biological controlling and applying resistance gene crops, ect.