立体栽培三七的光温效应及对光合的影响  

Light and temperature and their effects on photosynthesis characteristics of stereoscopic cultivation in Panax notoginseng

作　　者：王尧龙 崔秀明[1] 蓝磊 陈卫东 李瑞博[1] 王承潇[1] 杨晓艳[1] 刘大会[3] 杨野[1] 

机构地区：[1]昆明理工大学生命科学与技术学院昆明市道地药材可持续发展利用重点实验室,云南昆明650500 [2]昆明圣火药业集团珍稀药材繁育研究所,云南昆明650223 [3]云南省农业科学院药用植物研究所,云南昆明650231

出　　处：《中国中药杂志》2015年第15期2921-2929,共9页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金项目(81360617);云南省战略性新兴产业发展转型资金项目;昆明理工大学分析测试基金项目(20140743)

摘　　要：该文以立体栽培下的三七(三年生)为研究对象,对温室大棚内垂直层叠立体栽培结构下,不同层及同层不同位置(左、中、右侧)的光照强度、气体温度、土壤温度及光合特征等进行了测定。结果表明:光照强度、气体温度和土壤温度日变化均表现为上层>中层>下层;同层不同位置,光照强度表现为上层无显著差异,中下层左右两侧相同,且显著高于中间位置,气体温度表现为每层的左中右位置均无显著差异,土温表现为苗床中间土层(12 cm)土壤温度最低,并呈向上下表面逐渐升高之趋势;三七净光合效率表现为上层>中层>下层;气孔导度、胞间CO2浓度和净光合速率与光照强度显著相关,蒸腾速率与光照强度和气体温度显著相关,说明三七叶片净光合速率受光照强度直接影响,受气体温度和土壤温度间接影响。综上所述,研究表明三七立体栽培模式可行,改进苗床架构模式以提高中下层光照强度、增加苗床厚度以降低土壤温差和加强温室通风以调控气体温度等方式为今后提高立体栽培三七种植技术的改进方向。Light intensity, gas temperature, soil temperature and gas exchange parameters were determined of three years old Panax notoginseng planted on different layers seedbed and different location （ left, middle, right） of the same layer in greenhouse. Result show that diurnal variation of light intensity, gas temperature and soil temperature showed that upper layer 〉 middle layer 〉 lower layer; different locations of the same layer showed that light intensity of upper layer was not different among different locations ; light intensity of middle and lower layer in right and left were the same, and significantly higher than those in the middle position ; the gas temperature of each layer all with less different of each location; soil temperature of 12 cm depth is the lowest, and was gradually increased to the upper and lower surface; net photosynthetic efficiency of P. notoginseng showed that upper layer 〉 middle layer 〉 lower layer; there were significant correlation between soil temperature, stomatal conductance, intercellular CO2 concentration and photosynthetic rate were correlated with light intensity significantly; transpiration rates had notable correlation with light intensity and gas temperature. All above indicated that net photosynthesis rate of P. notoginseng was affected by light intensity directly, gas temperature and soil tempera- ture indirectly. Inconclusion, stereoscopic cultivation of P. notoginseng was practicable in present study. The planting quality of P. notoginseng under stereoscopic cultivation could be improved by ameliorate the structure of seedbed to enhance the light intensity ofmiddle and lower layer. Increase the thickness of the seedbed to decrease the temperature difference of soil. Further the management of ventilation facilities of greenhouse to control the gas temperature.

关 键 词：三七 立体栽培 光照 温度 光合作用 

分 类 号：S567.236[农业科学—中草药栽培]