三明林区杉木病害调查研究

在三明林区 ,杉木病害有 2 2种 ,病原 2 9种 ,真菌性病害占主导地位。人工杉木纯林发病率高且重于混交林 ,以叶部病害和枝干病害为两大主要病害类群。杉木炭疽病危害最大 ,远远超过其余种类病害。近期 ,病害的发生呈上升趋势 ,上升幅度主要取决于人工杉木纯林的增加幅度和经营措施

AN INVESTIGATION ON DISEASES OCCURRED ON CHINESE FIR IN SANMING FOREST REGIONS

There existed 22 species of diseases of Chinese fir Cunninghamia lanceolata (Lamb) Hook ] in Sanming forest regions, in which 29 species of pathogen were found, and mycoses was the dominat one. The incidence of diseases in pure forest was higher than that in mixde forest, and the diseases mainly occurred on leaves and stems. The incidence of the disease in anthracnose was the highest on diseases occurred of Chinese fir, and was far exceed other diseases of Chinese fir. The incidence of the disease is going up recently, and the extent depends on the increase of the area of artificial pure forest and related measures.