Rotation of picea asperata for pulpwood was tentatively determined as 25 year.

初步认为云杉纸浆材培育周期为25年.

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Gorals seldom feed on Pinus koraiensis, Picea jezoensis, Abies nephralepis ( 1 %, 0.7 % and 1.7 % , respectively ).

斑羚在冬季食红松 、 云杉 、 冷杉较少 ( 1% 、 0.7%、1.7% ).

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It mainly attacks Picea jezoensis and causes a white rot of root and butt.

该病主要发生于成熟林分,造成干基特别是根部腐朽.

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A northern North American spruce ( Picea mariana ) having blue - green needles and small egg - shaped cones.

一种北美北部的云杉 ( 黑云杉云杉属 ),有蓝绿色的杉针和小的蛋形的球果.

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Future application and research directions on somatic embryogenesis in Picea species are also recommended.

并展望了云杉属树种体细胞胚胎发生的应用前景及研究方向.

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