英语词汇“Seed tree”是什么意思，翻译、用法及简单造句-英汉双解词典-英汉网

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单词	Seed tree
释义	Seed tree 原声例句 VOA慢速英语_美国 Johnny Appleseed was a man who planted apple trees and shared seeds with settlers across the Midwestern U.S. from the 1790s through the 1840s. 从18世纪90年代到19世纪40年代，苹果籽约翰尼曾种植苹果树，并将种子分享给美国中西部的定居者。英语百科 Seed tree Seed trees are trees left after reproduction cutting to provide seeds for natural regeneration in the seed-tree method. These trees serve as both the gene source for the new crop of regeneration and as a source of timber during future cuttings. Because of its importance, a seed tree should be carefully chosen based upon both economic and biological factors. Selected seed trees should be the desired species, phenotypically superior, prolific in seeding and flowering, sturdy and healthy, free of damage, and of good growth form.
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