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调查发现,烟粉虱在扬州市发生呈现峰次多、虫量高,适生场所和生物型复杂,造成损失大等特点。经分析认为,设施蔬菜面积不断扩大、寄主种类多、气象条件有利、防治难度大、为害方式多是该虫为害重的主要原因。提出以烟粉虱越冬环节为防治重点,以研究推广抗性品种为基础,充分发挥农业措施、物理防治、生物治理等调控作用,在准确测报的基础上,科学使用高效、低毒化学农药及生物农药的综合防治对措施。
The survey found that Bemisia tabaci occurred in Yangzhou city peak times more, the amount of insects, habitats and biological complex, resulting in large losses and so on. The analysis shows that the growing area of vegetable facilities, host variety, favorable weather conditions, prevention and control is difficult, the damage is mostly caused by the pest weight of the main reasons. The paper puts forward that the control of the overwintering part of Bemisia tabaci (WBW) is the key point of prevention and treatment, based on the promotion of resistant varieties, giving full play to the agricultural regulation, physical control and biological control. On the basis of accurate measurement and reporting, Biological pesticides comprehensive control measures.