本文是报导苗圃选择火炬松和湿地松十年快速生长试验的结果。第一年苗床的生长高度是作为选择优质苗木的唯一标准。由于不良性可能伴随着快生长而出现,而这是林学家、遗传学家和植物病理学家所关心的。故此,凡是可能与快生长相联系的不良性状,如高频度发病率、不良干形、苗木成活率降低,或种子产量低等等都加以考察。 This article is the result of a ten-year rapid growth trial of nursery selection of Pinus taeda and Pinus elliottii. The first year the height of the seedbed is the only criterion for selecting quality seedlings. Adverse events can occur with rapid growth, which forestologists, geneticists, and plant pathologists are concerned with. Therefore, all those adverse traits that may be associated with fast growth, such as high frequency incidence, poor dryness, reduced survival rate of seedlings, or low seed yield, are examined.