合理使用农药,要求达到用量少、效果高、避免残毒以及害虫产生抗药性、减少对环境的污染、保证人畜安全,做到经济、安全、有效。一、适时对症下药每种农药都有各自的防治范围和对象。因此,必须针对病虫害的具体情况和植物的环境条件,选用适当的药物、浓度、施药期和方法。比如滴滴涕对多种 Rational use of pesticides, requiring less dosage, high effect, to avoid residual poison and pest resistance, reduce environmental pollution, ensure the safety of people and livestock, so that economic, safety and effectiveness. First, timely and right remedy Each pesticide has its own range of prevention and treatment. Therefore, we must select the appropriate drugs, concentrations, application period and methods according to the specific conditions of pests and diseases and plant environmental conditions. Such as DDT to a variety of