冬季气温低,病虫害的活动大都处于隐蔽状态。为了提高农药的防治效果,除对症施药外,还需注意掌握以下技巧:一、选择晴天高温时段用药因为害虫在气温较高时的取食量与呼吸强度均较大,药液喷洒到虫体上后被带到体内的药物也多些,有利于发挥毒杀作用。 Winter temperatures are low, most of the activities of pests and diseases in a hidden state. In order to improve the effectiveness of pesticide control, in addition to symptomatic drug application, but also need to pay attention to the following skills: First, the choice of sunny high temperature medication because the pests in the higher temperatures when the intake and respiratory intensity are large, spraying liquid insects After the body was taken to the body of the drug is also more conducive to play a toxic effect.