Zimbabwe embarked on planting Eucalyptus species in the early 1900s.Based on a robust breeding programme,it has become a......

1809年,Link在伊比利亚的高山欧石楠Erica arborea上发现了黑煤病(sooty mould),经鉴定将其命名为Sphaeria ericophila,最近有学者......