松脂合剂又叫松香碱。主要用于防治果树上的多种介壳虫,对螨类、粉虱、苔藓、地衣等效果也好。对害虫不产生抗性,不污染环境,因此长久使用不衰。松脂合剂应用不当时,也会造成损失。浓度过高,果实易受害脱落,叶片黄化;浓度过低,杀不 Rosin mixture also known as rosin. Mainly used for controlling a variety of scale insects on fruit trees, the mites, whitefly, moss, lichen and other effects. Insects do not produce resistance, do not pollute the environment, so long-term use is not bad. Improper use of turpentine mixture can also cause damage. Concentration is too high, the fruit vulnerable to fall off, leaves yellow; concentration is too low, kill no