摘要
对普文试验林场的25个不同种源西南桦子测林测定胸径、树高、材积等生长性状,利用Excel和DPS数据软件Duncan进行数据分析。结果表明:不同种源西南桦5 a生时胸径、树高和材积存在着显著差异,生长曲线在2 a生时近趋于直线;在4 a生和5 a生时生长曲线呈波形;生长量最大的是种源E(广西田阳),其次是种源K(云南澜沧);4 a生时生长量最小的是种源A(广西凌云),5 a生时生长量最小的是种源J(云南墨江)。
Using Excel and DPS data software Duncan multiple comparisons, the DBH, tree height and volume of 25 provenances of Betula alnoides in Puwen Experimental Farm were analyzed, results showed that: DBH, tree height and growth volume of five years different provenances Betula alnoides had the re- markable difference, the growth curve of two years tended to be linear, growth curve of four years and five years tended to be waveform; Provenance E (Tianyang of Guangxi province) had the largest growth volume, the next is provenance K ( Lancang of Yunnan) ; and in the four years, the smallest is the prov- enance A (Linyun of Guangxi) ; in the five years, the smallest is the provenance J ( Mojiang of Yun- nan).
出处
《林业调查规划》
2012年第3期121-124,共4页
Forest Inventory and Planning
基金
"遗传改良"项目由国际热带林木组织(ITTO)资助
关键词
西南桦
种源
生长量测定
生长曲线
Betula alnoides
provenance
growth measurement
growth curve