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本文对引种栽培于贵州省植物园的小黄花茶 (CamellialuteofloraY .K .Li)、美丽红山茶 (C .delicataY .K .Li)、威宁短柱油茶 (C .salenensisStapf.ex .Bean .)、狭叶瘤果茶 (C .neriifoliaChang)和四球茶 (C .tachangensisF .S .Zhang)等贵州特优观赏山茶的光合生理特性进行了研究报道 :(1) ,均为C3植物 ,其CO2补偿点在 6 0 μL/L左右 ,光呼吸速率与总光合的比值为 2 5% ,光补偿点是 80 0～ 2 50 0lx ,光饱和点 16 0 0～4 10 0 0lx ;其中小黄花茶的光补偿点及光饱和点最低 ,威宁短柱油茶的光补偿点及光饱和点最高。 (2 ) ,净光合速率 (Pn) 6 .0 0～ 15.0 0CO2 mg/ (dm2 ·h) ,光呼吸速率 (Pr) 2 .0 0～ 5.0 0CO2 mg/ (dm2 ·h) ,其中威宁短柱油茶的Pn及Pr均较高 ,四球茶的Pn及Pr均较低。暗呼吸速率 (Dr) 0 .70～ 2 .6 0CO2 mg/ (dm2 .h) ,其中威宁短柱油茶的Dr较高 ,小黄花茶的Dr较低。 (3) ,Pn、Pr及Dr相互间呈正相关 ;Chl.(a +b) (叶绿素 )含量 7.6 0～ 12 .50mg /dm2 ,其中小黄花茶的含量较高 ,威宁短柱油茶的含量较低。这一结论对研究其观赏植物学特性和扩繁栽培等具有科学价值
In this paper, the introduction of cultivated in Guizhou Province Botanic Garden Camellial ofofloraY.K.Li, beautiful red camellia (C. DelicataY.K.Li), Weining short column Camellia (C. SalenensisStapf.ex .Bean.), Photosynthetic characteristics of Camellia sinensis (Camellia sinensis), such as C. NeriifoliaChang and C.tachangensisF .S. Zhang, were reported in this paper. (1) All of them are C3 plants with CO2 compensation points At about 6 0 μL / L, the ratio of photorespiration to total photosynthesis was 25%, light compensation point was 80 0 ~ 2 50 0 lx, light saturation point was 16 0 0 ~ 4 10 0 0 lx, Compensation point and the lowest light saturation point, Weining stubby tea light compensation point and light saturation point highest. (2), Pn 6.0 ~ 15.0 0CO2 mg / (dm2 · h) and photorespiration rate (Pr) 2.0 ~ 5.0 0CO2 mg / (dm2 · h) Oleum Pn and Pr are higher, four-ball tea Pn and Pr are lower. The dark respiration rate (Dr) was 0.70 ~ 2.060 mg / (dm2 · h), of which the Wein stubby tea dr was higher, the small yellow tea Dr low. Pn, Pr and Dr were positively correlated with each other; the content of Chl. (A + b) (chlorophyll) was 7.6 0-12.50 mg / dm2, Lower. This conclusion is of scientific value to the study of its ornamental botany characteristics and its multiplication and cultivation