一忌温度过高时喷施在高温强光时喷药,由于害虫大部分停止活动、躲于阴凉背光处,药剂不易喷施到位,而且在高温下农药挥发损失大、药性分解快,因此,此时喷药药效反而降低。另外,温度过高时喷药,由于药剂挥发性强,很容易导致操作人员中毒。二忌露水未干时喷施有的 A bogey when the temperature is too high spray spray at high temperature and light, most of the pests stop activity, hide in the shade of the shade, the agent is not easy to spray in place, but also volatile pesticides at high temperatures, rapid decomposition of the drug, therefore, At this time the efficacy of spraying instead lower. In addition, the spraying temperature is too high, due to strong volatile chemicals, it is easy to cause operator poisoning. Second, when the spray is not exposed dew did