【摘要】 <正> 70年代以来,酸雨作为一个重大的环境问题在欧洲、北美及亚洲等许多国家和地区受到了极大的关注和重视。科学工作者相继从各个方面进行了许多研究。在酸雨对生态系统影响的研究中,有关酸雨对植物病害发生影响的研究报道尚不多见。有些科学家在酸雨及其它空气污染对病原体与寄主植物之间相互关系的影响做过一些研究。Shriner在美国报道过模拟酸雨使柳栎(Quercus phellos)上的梭形锈病(Cronartium fusiforme)冬孢子的80%受到抑更多还原

【Abstract】 The effects of acid rain on the susceptibility of Pinus massoniana to Lophodermium pinastri and Meloderma desmazierii were studied in several regions of Chongqing. The incidence of diseases was severer on trees in heavy acid rain areas. But, under conditions with pH<4.0, L.pinastri is inhibited. The percentage of needles covered with saprophytic fungi is much higher in heavy acid rain areas. Acid rain may be considered as one of the most important factors for the death of pinus massoniana in Manan of Chongqing.更多还原