仿野生栽培下块根紫金牛的生长与光合特性研究  

Growth and Photosynthetic Characteristics of Ardisia corymbifera var. tuberifera in Bionic Wild Cultivation

作　　者：王满莲[1] 韦霄[1] 史艳财[1] 孔德鑫[1] 

机构地区：[1]广西壮族自治区中国科学院广西植物研究所,广西桂林541006

出　　处：《中药材》2014年第10期1721-1724,共4页Journal of Chinese Medicinal Materials

基　　金：广西自然科学基金项目(2012GXNSFBA053069);广西科技攻关项目(0992003B-37);广西植物研究所基本业务费项目(2013006)

摘　　要：目的:探讨块根紫金牛仿野生栽培条件下的生长动态和光合生理特性。方法:用块根紫金牛两年生种子苗和三年生扦插苗进行仿野生栽培试验,观测其生长动态和光合生理特性。结果:块根紫金牛种子苗与扦插苗均能在仿野生环境下保持较好的生长,种子苗与扦插苗的株高分别增长了9.2 cm和12 cm,基径分别增长了2.48mm和2.39 mm,冠宽分别增长了10.6 cm和17 cm。两年生种子苗一年萌生1次分枝,三年生扦插苗一年萌生3次分枝。块根紫金牛种子苗与扦插苗的光合生理参数无显著差异,其适应的光强范围较广,但弱光下量子效率和强光下光合能力较低,野外竞争能力不强。结论:块根紫金牛扦插苗株高和冠宽增长量大于种子苗,其移栽成活率也高于种子苗。Objective： To explore the growth dynamic and photosynthetic characteristics of Ardisia corymbifera var. tuberifera in bionic wild cultivation. Methods： The test of bionic wild cultivation was conducted with two-year-old seedlings as well as three-year-old cuttings of Ardisia corymbifera var. tuberifera,and their growth dynamic and photosynthetic characteristics were studied. Results： Both seedlings and cuttings of Ardisia corymbifera var. tuberifera maintained good growth in imitation of the wild,the height were increased by9. 2 cm and 12 cm,base diameter were increased by 2. 48 mm and 2. 39 mm,and crown width were increased by 10. 6 cm and 17 cm,respectively. Two-year-old seedlings branched only once a year,and three-year-old cuttings branched thrice a year. There were no significant differences in all photosynthetic parameters of the two kinds of seedlings,and the range of growth light intensity of Ardisia corymbifera var. tuberifera was wider. Owing to the weaker light quantum efficiency under lower light and relatively lower light photosynthetic capacity under higher light,its competition ability was lower in the field. Conclusion： The increases of height and crown width were greater in cuttings than those in seedlings,and the transplanting survival rate of the former was larger.

关 键 词：块根紫金牛 仿野生栽培 生长 光响应曲线 

分 类 号：R282.2[医药卫生—中药学]