摘要
目的:探讨野生抚育益智的光合特性,为益智野生抚育环境选择及高产栽培管理提供理论依据。方法:采用Li-6400型便携式光合作用测定仪测定不同处理条件下益智花芽分花期叶片净光合速率对光强、CO2浓度的响应及光合生理特征参数。结果:最大净光合速率(Pmax),日均光合速率(Pn),表观量子效率(AQY),表观羧化效率(CE)及光能利用率(LUE),水分利用效率(WUE)均以透光率17.4%～24.1%的野生抚育处理较大;超出此透光率均不利用益智光合能力提高;随着光强增加益智光补偿点(LCP)和光饱和点(LSP)均会提高;野生抚育提高了益智CO2的适应范围。结论:益智为喜阴植物,野生抚育栽培最适应的透光率在17.4%～24.1%。
Objective： To investigate the photosynthetic characteristics of wildlife tending Alpinia oxyphyIla,and provide a theoretical basis for choosing wildlife tending environment and cultivation management.Method： The response parameters of the net photosynthetic rate to light intensity,CO2 concentration and photosynthetic characteristics were measured by Li-6400 portable photosynthesis in blossom bud forming stages under different treated conditions.Result： The maximum net photosynthetic rate（Pmax）,daily average photosynthetic rate（Pn）,apparent quantum efficiency（AQY）,apparent carboxylation efficiency（CE）,light using efficiency（LUE）,and water use efficiency（WUE） were optimal in the wild tending treatment at the light transmission rate of 17.4%-24.1%,beyond the light transmission rate,the photosynthetic capacity utilization of A.oxyphyIla would not have a significant increase or be inhibited.The light compensation point（LCP） and light saturation point（LSP） of A.oxyphyIla improved with light intensity enhancing.Wildlife tending could enhance the scope of A.oxyphyIla to CO2 adaptation.Conclusion： A.oxyphyIla as sciophytes,and the optimum light transmission rate for wild tending and cultivating was at 17.4%-24.1%.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2011年第2期123-126,共4页
China Journal of Chinese Materia Medica
基金
国家“十一五”科技支撑计划项目(2007BAI27B03)
关键词
益智
野生抚育
光响应
CO2响应
透光率
Alpinia oxyphyIla； wildlife tending； light response； CO2 response； transmittance
