Acer rubrum cv.Columnare是什么意思

网络释义

用法例句

Effect of Soil Nutrition Change on Chlorophyll Content of Acer rubrum;

土壤养分变化对红花槭叶绿素含量的影响

Large maple varieties introduced from North America in recent years in Shanghai were Acer rubrum series,A.

上海地区近年来新引进的大规格北美槭树品种主要有红花槭类、挪威槭类和杂种元宝槭类,2004—2007年对上述北美槭树的生长习性和主要病虫害进行了连续观察与研究,结果表明:红花槭类和杂种元宝槭类生长良好,叶色季节性变化明显,秋景壮观,而挪威槭类夏季叶片枯焦、落叶严重,生长一般;主要病虫害发生特点具有明显的差异性,红花槭类和挪威槭类病虫害发生比较严重,而杂种元宝槭类则较轻。

The daily change of photosynthetic rate of two types of Aceracea plants including Acer serrulatum Hayata and Acer lucidum Metc were studied by Li-6400 photosynthetic system.

采用Li-6400光合分析仪,对青枫和红翅槭两种类型的槭树的光合速率进行了日变化测试,结果表明:两种槭树净光合速率日变化呈双峰曲线,最大值出现在中午11:30时,次峰值出现在下午14:30时,"午休"现象明显。