6.黑杨类人工林立木二元材积表

V=0.000036D1.65127H1.28216(适用品系:I-107杨、I-108杨)(材积:m3)胸径(cm)树高(m)55.566.5756789100.0040.0050.0070.0090.0110.0130.0050.0060.0080.0100.0120.0140.0050.0070.0090.0110.0130.0160.0060.0080.0100.0120.0150.0180.0060.0080.0110.0140.0160.020胸径(cm)树高(m)7.588.599.5678 ......（本文共 6721 字 ）     [阅读本文]>>