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通过监测东台市小麦赤霉病病菌对多菌灵的抗药性消长动态,总结出抗性菌株分布广泛、抗性频率上升迅速、区域分布极不平衡、抗性消长存在自然调节等抗性发展特点。分析发现多菌灵长期大量使用、小麦种子远距离调运、抗性菌株竞争力下降等是赤霉病病菌抗药性发展和变化的主要影响因素。在此基础上,提出了引进种植抗病品种、合理安排品种布局、规范种子生产管理、开发生物防控技术、调整化学药剂施用配方等防治小麦赤霉病、控制赤霉病病菌抗药性发展的对策。
By monitoring the dynamics of resistance to carbendazim in Dongtai City, it was concluded that the resistant strains were widely distributed, the frequency of resistance increased rapidly, the distribution of the region was extremely unbalanced, . It was found that long-term use of carbendazim in long-term, long-distance transportation of wheat seeds, and decreased competitiveness of resistant strains were the main influencing factors for the development and change of drug resistance of Fusarium graminearum. On this basis, it is proposed to control the development of Fusarium head blight and to control the development of Fusarium graminearum by introducing the planting of resistant varieties, arranging the layout of varieties rationally, standardizing the production and management of seeds, developing the biological control technology, adjusting the application formulas of chemical agents and so on Countermeasures.