Postharvest management refers to procedures taken to prep the fields for the following year, including training, pruning, and using appropriate amounts of fertilizer and pesticides. The principal aims of the practice are to prevent pests from surviving the winter and to reduce infestation density at its source, so as to prevent its spread, allowing for healthier trees when spring arrives.
所謂「清園」，是在採收後配合整枝修剪、合理使用肥料及農藥，不讓病蟲在果園越冬，感染源密度降低後不再繁殖，春天植株就不易發病。