在农业生产实践中,农药对病虫草害的防治效果常受施药时的天气影响,在不适宜的天气条件下使用农药,不但降低药效、缩短残效期,还会增加对环境的污染和产生药害的机会,难怪农民常说“看天时,巧施药”。那么,在什么样的天气条 In the practice of agricultural production, the pest control effect on pests, diseases and weeds is often affected by the weather when applying pesticides. Using pesticides under unfavorable weather conditions not only reduces the efficacy and shortens the residual period, but also increases the environmental pollution and Produce the opportunity of phytotoxicity, no wonder farmers often say “look at the sky, clever application of medicine.” Well, what kind of weather it is