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林木前期引种效果是引种栽培区划的辅助依据 .对美国山核桃在我国的适生情况、栽培管理水平、生长结实表现以及坚果经济性状进行了研究 ,并与原产地美国作了相应的对比分析 .结果表明 ,该树种在我国的整体适应性较好 ,在亚热带东部和长江流域的大部分地区生长发育正常 ,小面积坚果产量和品质达到甚至超过了原产地的水平 .但是 ,我国目前大面积美国山核桃产量低、结实迟 ,这主要是栽培管理水平较低所致 .
The introduction effect of early forest was the auxiliary basis of introduction and cultivation zoning.Studies on the fitness, cultivation and management, growth and firmness, and nut economic characters of pecan in our country were compared and analyzed with the origin of the United States. The results showed that the tree species in our country had better overall adaptability, grew and developed normally in most of the subtropics and the Yangtze River valley, and the output and quality of small-area nuts reached or even exceeded the level of the original country. However, Hickory yield is low, fruiting later, mainly due to the low level of cultivation and management.