环境对冬季设施栽培草莓光合特性的影响  

Effects of environmental factors on photosynthetic characteristics of strawberry cultured in greenhouse in winter

作　　者：齐璐璐 陈延松 袁华玲 沈海燕 赵菁 张雪纯 QI Lu-lu;CHEN Yan-song;YUAN Hua-ling;SHEN Hai-yan;ZHAO Jing;ZHANG Xue-chun(Department of Life Science,Hefei Normal University,Hefei 230601,China;Hefei Yanjiutian Agricultural Science and Technology Co.Ltd.,Hefei 231100,China)

机构地区：[1]合肥师范学院生命科学学院,安徽合肥230601 [2]合肥市艳九天农业科技有限公司,安徽合肥231100

出　　处：《甘肃农业大学学报》2018年第3期90-97,共8页Journal of Gansu Agricultural University

基　　金：安徽省自然科学基金项目(1608085MC62);安徽高校省级优秀青年人才基金重点项目(2013SQRL068ZD);合肥师范学院校级产学研项目(2016CXYZB009);合肥师范学院校级自设类双真课程建设项目(2016yj29);合肥师范学院院级自然科学研究项目(2011kj14);安徽省高校省级自然科学研究项目(KJ2011Z315);作物生物学安徽省重点实验室开放基金立项项目(2014SKQJ002)

摘　　要：【目的】探明冬季设施栽培下3个草莓品种花果期的叶片光合特性.【方法】利用便携式光合仪测定光合作用指标,分析环境因素对净光合速率(Pn)日变化的影响.【结果】‘红颜’‘法兰地’‘宁玉’草莓叶片Pn日变化均为单峰曲线;‘红颜’光合能力优于‘法兰地’和‘宁玉’,其Pn日最高值与日均值分别为14.81和10.19μmol/(m2·s),分别较‘法兰地’高16.49%和22.20%,较‘宁玉’高16.99%和11.78%;光合有效辐射、空气CO2浓度和蒸腾速率具有正向调控作用,是草莓Pn的决定因素;而高的叶面温度具有负向调控作用,是限制因素.【结论】在冬季设施栽培条件下,12∶00~14∶00时段叶面温度约为35℃,14∶00后光合有效辐射从最高值快速降低,可通过适当通风降温,适时适量补光的方式提高光合效率.【Objective】To better understand the leaf photosynthetic characteristics of 3 strawberry cultivars in flowering and fruiting periods under greenhouse conditions in winter.【Method】The gas exchange parameters were measured by using aportable photosynthesis meter,and the effects of environmental factors on net photosynthetic rates（Pn）were analyzed.【Result】The diurnal changes of Pnin leaf of 3 strawberry（Fragaria×ananassa）cultivars（‘Hongyan＇,‘Falandi＇and‘Ningyu＇）were all single-peak curves.The photosynthetic ability of‘Hongyan＇was better than others.The highest and average daily value of Pn in‘Hongyan＇were 14.81μmol/（m2·s）and 10.19μmol/（m2·s）,which were 16.49% and 22.20%,and16.99% and 11.78% higher than‘Falandi＇and‘Ningyu＇respectively.The regulatory effectives of photosynthetic active radiation,air CO2 concentration,and transpiration rate on Pnwere positive,while high leaf temperature had a negative regulatory role,which was a limiting factor.【Conclusion】Under the facility cultivation conditions in winter,the leaf temperature was about 35 ℃from 12∶00 to 14∶00,and the photo-synthetic active radiation declined rapidly from 537.49μmol/（m^2·s）after 14∶00.The photosynthetic efficiency can be improved by appropriate ventilating and proper replenishing light.

关 键 词：草莓 净光合速率 环境因素 生理因素 通径分析 

分 类 号：S668.4[农业科学—果树学]