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桉树抗零下低温的能力是桉树北移的限制因子,上海地区在1958年及1964年有过两次大规模栽种桉树,因不抗低温而告失败的经验教训。因此如能在生长早期作出抗寒性的鉴定是
The ability of eucalyptus to resist subzero temperatures is a limiting factor for the northward migration of eucalyptus. Shanghai has had two large-scale planting of eucalyptus trees in 1958 and 1964, failing to resist low temperatures. Therefore, if we can make the identification of cold resistance in the early growth stage