| dc.description.abstract | 果樹為多年生高大植物，一般採用無性繁殖與集約經營，因此果園易發生嚴重病害。綜合防治為維持果樹健康較為簡單的方法，它利用栽培、藥劑和生物防治等技術將病害控制在經濟危害臨界點之下。為能達到綜合防治的效果，必須了解寄主植物、病原菌、環境因子與人類活動交互作用對病害發生的影響，亦即栽培品種、接種源密度、氣象因子、果樹生長狀況、噴藥器械、噴藥時機、噴藥方法以及殺菌劑的種類與用量均能影響防治效果。綜合防治策略之擬定，乃是根撮果樹的經濟價值、經濟危害臨界點、病原菌族群密度、可資利用防治技術以及噴藥時機與經濟效益關係等因素而決定。綜合防治方法之施行則包括整個果樹生長發育期，由種植前、種植期間乃至於採收後，均須持續不斷的進行。
Fruit treeis perennial woody plant with vegetative propagation. Diseases are serious problems in the orchards because of intensive cultural practices. Integrated disease management is a relative simple way to solve fruit tree healthy problems. It includes cultural practices, use of fungicide, and biological control to maintain the disease level under economic threshold of loss. To achieve the goal of integrated disease management, the interactions among host, pathogen, environment and man activity have to be underst∞d completely. There are several factors affecting disease control, including cultivars, amount of inoculum, weather factors, fruit tree growth, spray equipment, spray timing, application method, and use of fungicide and its dosage. Disease management depends on accurate knowledge of crop economics, the economic thresholds of loss, the dynamics of pathogen population, the use of control techniques commensurate to the effect desired, and the relation between timing of control action and economic effect. Integrated disease management has to be conducted continuously in the whole growing stages of fruit trees which include before planting, after planting and after harvest. | en_US |
