摘要
本研究旨在完善有机栽培理论,为有机酿酒葡萄栽培的整枝方式提供理论依据,用CIRAS-2便携式光合作用测定系统研究了盆栽赤霞珠(Cabernet Sauvignon)光合特性。结果表明:有机栽培条件下,赤霞珠4～5片叶短副梢净光合速率最高;主蔓从茎尖开始3～5叶位Pn就可以达到最大值(10.4μmol.m-2.s-1),但仅为短副梢最大值的50%。赤霞珠东侧叶片在早上8:00时Pn就达到一天中的最大值12.58μmol.m-2.s-1,但下降较快;朝南叶片上午11:00出现峰值(9.73μmol.m-2.s-1);西侧叶片在16:00虽然也出现峰值(7.59μmol.m-2.s-1),但只是南侧叶片峰值的72.6%。赤霞珠光饱和点(LSP)为97μmol.m-2.s-1,光补偿点(LCP)为31.9μmol.m-2.s-1。CO2对赤霞珠光合速率的提高有极大的促进作用,赤霞珠CO2补偿点(CCP)为56μL.L-1,CO2饱和点为1290μmol.m-2.s-1。
The photosynthetic characteristics of Cabernet Sauvignon were systematicly studied with portable CIRAS-2 system for the organic cuhrual theory and trimming method for the goal ofmaking organic wine. Under organic conditions the biggest values of Pn were determined on side branch with 4-5 leaves. The Pn in the main stem was found the highest level, 10.4 μmol·m^-2·s^-1, on the 3-5 leaves from the stem tip, but only 50% of that in the side branch. The Pn of eastern leaves was the highest, 12.58 μmol·m^-2·s^-1 at 8：00 am, then decreased quikly. The maxiumum value for western leaves appeared at 4：00pro. The leaves toward south had highest photosynthesis, 9.73μmol·m^-2·s^-1 at 11：00 am. Cobernet Sauvignon had LSP of 9711μmol·m^-2·s^-1 and CCP of 56μL·L^-1.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2008年第6期730-732,共3页
Journal of Shenyang Agricultural University
基金
北京市教育委员会科技发展计划面上项目(KM200600005001)
关键词
赤霞珠
光合特性
有机栽培
Cabernet Sauvignon
photosynthetic characteristics
organic cultivation
