General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 16621-1996
Scope
This standard specifies the conditions, methods and management techniques for the selection and construction of mother forests. This standard applies to the mother forests of the main afforestation tree species in my country.
GB/T 16621-1996 history
1996GB/T 16621-1996 The techniques used in silviculture for seed production stand