CAJ | 학술논문

采用 Li-6400便携式光合测定系统对茶树新品种桂绿1号的光合-光响应曲线和光合日变化进行了测定分析。结果表明，在夏季晴天条件下，桂绿1号净光合速率（Pn）日变化呈单峰曲线，峰值出现在11：00，约为9.36μmol·m-2·s-1；蒸腾速率（ Tr ）的日变化也为单峰曲线，但其最大值出现在15：00，约为4.06 mmol·m-2·s-1。该品种的光饱和点与光补偿点分别为354.60μmol·m-2·s-1和7.13μmol·m-2·s-1，表观量子效率（Φ）为0.088 mol·mol-1。逐步多元回归分析表明，光合有效辐射和空气相对湿度是直接影响桂绿1号茶树净光合速率日变化的主要因子。该研究为桂绿1号的引种、速生丰产和制定栽培管理措施提供理论依据。
채용 Li-6400편휴식광합측정계통대다수신품충계록1호적광합-광향응곡선화광합일변화진행료측정분석。결과표명，재하계청천조건하，계록1호정광합속솔（Pn）일변화정단봉곡선，봉치출현재11：00，약위9.36μmol·m-2·s-1；증등속솔（ Tr ）적일변화야위단봉곡선，단기최대치출현재15：00，약위4.06 mmol·m-2·s-1。해품충적광포화점여광보상점분별위354.60μmol·m-2·s-1화7.13μmol·m-2·s-1，표관양자효솔（Φ）위0.088 mol·mol-1。축보다원회귀분석표명，광합유효복사화공기상대습도시직접영향계록1호다수정광합속솔일변화적주요인자。해연구위계록1호적인충、속생봉산화제정재배관리조시제공이론의거。
The Pn-PAR response curve and diurnal variation of photosynthesis ofa new teacultivarGuilyu-Iwere measuredand analyzedwith the Li-6400 portable photosythesis measuring system.The results showed thatthe curve of diurnal variation of net photosynthetic rate (Pn) couldbe described as unimodal curve,and the peak value was 9.36μmol·m-2·s-1,which occurred at11:00AM. The curve ofdiurnal variation of transpiration rate was alsoshowed in asingle peak curve,but the peak value appeared at 15:00,which was4.06mmol·m-2·s-1.The stepwise multi-regression analysis showed that thephotosynthetically active radiation and air relative humidity were the main direct factors which affected the diurnal variation of Pn.The light compensation point and light saturation point in cultivarGuilyu-Iwere7.13and354.60μmol·m-2·s-1respectively.And the apparent quantum yieldwas0.088 mol·mol-1.Thisstudyprovidedatheoretical basis for fast-growingandhigh-yieldcultivation, andforthe establishment ofcultivationmanagementstrategyof the introduction ofGuilyu-Icultivar.