【摘要】 华山松疱锈病在陕西省秦岭华山松自然分布区域均有发生,病情从西向东逐渐加重,以中幼龄人工纯林发病较为严重,混交林则发病较轻。危害最严重的林分发病率高达54％,村积损失量为4.16m~3/ha,林分蓄积损失率为6.21％。更多还原

【Abstract】 Describes the incidence and distribution of Armand pine (Pinus arman-di) blister rust (Cronartum sp.) in Qinling forest area of Shaanxi Province. The intensity of infection was increasing from the west to the east. Incidence in middle and young stand of artificial pure forest was more severe than that in the mixed stand. The incidence in seriously damaged stand was as high as 54%, and the volume loss amountes to 4.16m3/ha. Stand volume loss percent was 6.21%.更多还原