早春柑桔发芽前喷石硫合剂清园比冬喷好石硫合剂是一种强碱性杀菌、杀虫、杀螨剂，常用作冬季清园，以消灭病原物及越冬害虫。但据笔者多年试验观察，在柑桔树复苏后至发芽前喷同样浓度（波美１～２度）的石硫合剂，效果比冬季喷布好。究其原因，笔者认为一是冬季植株处于... Early spring before the sprouting of citrus spray sulfur and sulfur mixture than the winter spray fine stone sulfur mixture is a strong alkaline disinfectant, acaricide, commonly used as a winter clearing garden to eliminate pathogens and overwintering pests. However, according to the author for many years of experimental observation, after the recovery of citrus trees to sprout before spraying the same concentration (Baume 1 or 2 degrees) of lime sulfur mixture, the effect better than the winter spray. The reason, I think the first winter plants in ...