论文部分内容阅读
用美国湿地松13个地理种源及伴随的5种美国南方松作地理种源引种试验,以7年的试验资料分析其早期变异,预测了变异趋势,为湿地松及5种美国南方松的引种提供了依据。
Thirteen geographic provenances of American slash pine and five species of Pinus sylvestris var. Mongolica were introduced by geographical provenance. Seven years of experimental data were used to analyze their early variation and the trend of variation was predicted. Introduction provided the basis.