摘要
以12个不同杨树品种的1年生扦插苗为试验材料,对其在武汉地区的物候期和生长规律进行了动态测定。结果表明:各品种的物候期存在较大差异,以变异系数来看其中以芽膨大期差异最大,落叶末期差异最小;杨树扦插苗的苗高、地径以及叶片数的生长规律呈递增的变化趋势,符合"S"型生长曲线,杨树苗木的速生期在6月中旬到8月中旬左右。
Phenological stage and annual growth dynamics of one-year-old stecklings of twelve varieties of Populus deltoides in Wuhan were studied.The results showed that there were differences in phenophase among these materials.The largest variation was found out with the bugs expanding stage from the variation coefficient,and the least difference was shown by the late abscission period.The growth rules of steckling height,ground diameter and leaf numbers were ＂S＂ type.Fast-growing period of these varieties was from mid-June to mid-August.
出处
《林业科技开发》
北大核心
2013年第1期46-49,共4页
China Forestry Science and Technology
基金
国家林业公益性行业科研专项(编号:201204311)
关键词
杨树
物候期
生长规律
Populus deltoides
phenological stage
growth rhythm
