Tree seedling quality grading of Betula platyphylla Suk.
国家林业局
本标准规定了白桦造林苗木的术语和定义、分级要求、试验方法、检验规则。
本标准适用于白桦适宜林区速生丰产林营造。
This standard is the original Chinese electronic standard. After you successfully purchase, we will send the electronic version of this standard to your email address. If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
