果园防治病虫害应注意的几个问题近年果园病虫害日益猖獗，给果树生产造成很大损失，这与果农盲目滥用农药，施用方法不当有重要关系，有的果园一年用药十几次，既浪费了人、财、物力，又严重污染果实并使害虫产生抗药性。所以合理用药防治病虫害，是提高经济效益的重要途... Orchard pest control should pay attention to several issues in orchard in recent years, increasingly rampant pests and diseases, resulting in great losses to the production of fruit trees, which blindly abuse of pesticides farmers, improper application methods have an important relationship, and some orchards use more than a dozen times a year, both waste Human, financial and material resources, but also a serious pollution of fruits and pests produce resistance. Therefore, the rational use of pesticides to control pests and diseases is an important way to improve economic efficiency ...