不少农民喜欢在中午高温时间内用药,他们认为温度高可提高杀灭病虫的效果。其实,结果适得其反,高温季节,中午气温高,日照强,这时使用农药,其不利因素较多。主要有:一是杀虫效果差。大部分害虫的生活习性,有相当一部分害虫是在傍晚或夜间活动,如稻螟虫,稻纵卷叶螟,棉铃虫等害虫的怕光、怕热,在中午强光照射下会躲藏起来,此时使用农药、杀虫效果 Many peasants like to take medication at noon during hot temperatures, and they think the high temperatures can increase the effectiveness of killing pests and diseases. In fact, the result is counterproductive, high temperature season, noon temperature is high, strong sunshine, then use pesticides, the more unfavorable factors. There are: First, insecticidal effect is poor. Most of the pests’ habits and habits, a considerable part of the pests in the evening or night activity, such as rice stem borer, rice leaf roller, cotton bollworm and other pests fear of light, fear of heat, in the noon light will hiding, this When using pesticides, insecticidal effect