托盘青冈容器苗的生长和光合特性
时间:2018-04-09 22:05 来源:毕业论文 作者:毕业论文 点击:次
摘要:托盘青冈是壳斗科,青冈属常绿乔木,高可达25米,胸径达1米,树皮灰褐色,片状剥裂。产江西(南部)、广东、广西等省区。生于海拔400-1 000米的常绿阔叶林中。喜湿润,在海南岛山地森林中为上层树种,其在我国中部及北部地区很少见。我们通过测量各个季节(春季,夏季,秋季,冬季)托盘青冈容器苗的株高,冠幅,茎粗的生长特点和光合作用的日变化,季节变化以及光响应曲线,来比较各个季节光合作用的光饱和点、补偿点、最大光合速率等,托盘青冈在2013年9月24日最大光合速率为6.705,光补偿点为16.22,光饱和点为564.5,2014年3月7日最大光合速率为1.367,光补偿点为60.92,光饱和点为423.5,2014年4月30日最大光合速率为2.524,光补偿点为73.63,光饱和点为664,2014年5月13日最大光合速率为2.802,光补偿点为44.8,光饱和点为514.7。20822 毕业论文关键词:壳斗科 ;光合作用;光饱和点;最大光合速率 The growth and photosynthesis characteristic of tray oak vessel seedling Abstract: The tray oak is the Fagaceae, the oak is often the green tree, Gao Keda 25 meters, the tree diameter at chest height amounts to 1 meter, the bark dust color, the laminated stripping. Produces Jiangxi (south), Guangdong, Guangxi and other provinces. Born in the elevation 400-1 000 meters often in green foliage forest. Happy moist, in Hainan Island mountainous region forest is the upper tree seed, it is in our country and northern area is very rare. We through surveying each season (spring, in the summer, in the fall) high of tray oak vessel seedling, crown, diurnalvariation of stem thick growth characteristic and photosynthesis, seasonal variation as well as light response curve, compares each season photosynthesis light saturation point and compensation point, maximum photosynthesis speed and so on. Tray cyclobalanopsis on September 24, 2013 maximum photosynthetic rate is 6.705, the light compensation point of 16.22, 564.5 light saturation point, March 7, 2014, the maximum photosynthetic rate is 1.367, the light compensation point of 60.92, 423.5 light saturation point, on April 30, 2014, the maximum photosynthetic rate is 2.524, light compensation point 73.63, light saturation point for 4 years on May 13, 664201 maximum photosynthetic rate is 2.802, light compensation point 44.8, light saturation point of 514.7. Keywords:Fagaceae;photosynthesis; The light saturation point; Maximum photosynthetic rate 目 录 1绪论1 1.1 托盘青冈的概念.1 1.2壳斗科植物在我国城市园林绿化中的应用现状及前景1 1.2.1适合做行道树.1 1.2.2 用于公园、绿地的植物配置1 1.2.3种植于庭院,单位.1 1.2.4郊区林网,绿带 2 1.2.5应用前景及存在的问题.2 1.3 我国青冈属资源的综合利用.2 1.3.1树 皮.2 1.3.2木 材.2 1.3.3枝娅、树叶、壳斗.3 1.3.4种 仁.3 1.3.5全 树.3 1.4 栎属植物的引种概况.3 2 材料与方法4 2.1 研究材料4 2.2 实验方法4 2.2.1播种繁殖4 2.2.2 移栽 5 2.2.3 定时浇水 5 2.2.4 植株生长量测定(株高,茎粗,冠幅) 5 2.2.5 光合速率的测定 5 3 实验结果与分析 6 3.1 外部生物量结果分析 6 3.2 光合光响应曲线 10 4讨论 13 5结论.14 致 谢 15 参考文献 16 绪论 1.1托盘青冈的生物学特性 托盘青冈(Cyclobalanopsis patelliformis (Chun) Y. C. Hsu et H. W. Jen)为常绿乔木,树皮灰褐色。冬芽卵形至卵状长椭圆形,棕色,无毛。叶片革质,椭圆形、长椭圆形或卵状披针形,叶缘具短尖锯齿,叶面深绿色,叶背淡绿色;雌花序长2-3厘米,有花3-5朵,花柱3。坚果单生于果序轴上。壳斗盘形,包着坚果约1/3,;小苞片合生成8-9条同心环带。坚果扁球形,果脐凹陷或平坦。花期5-6月,果期翌年10-11月。产江西、广东、广西等省区。生于海拔400-1000米的常绿阔叶林中。喜湿润,在海南岛山地森林中为上层树种[1]。 (责任编辑:qin) |