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设施内外人面竹夏季光合作用日变化及影响因子研究
严彦,秦金舟,苏文会,苏浩然
0
(国际竹藤中心安徽太平试验中心;安徽农业大学林学与园林学院)
摘要:
2012年7月对设施及露地栽培的人面竹(Phyllostachys aurea Carr. ex A. et C. Riv)光合作用及其影响因子进行了研究。分析设施栽培条件下人面竹净光合速率日变化规律,以及设施内外光照强度、温度、湿度、CO2浓度等因子的差异性,试图为设施栽培人面竹提供合理的栽培模式及理论依据。结果表明,设施内有降温措施和无降温措施条件下,人面竹净光合速率日变化曲线均呈双峰型,但露天条件下人面竹净光合速率日变化曲线双峰型特点不明显,日均Pn设施内有降温>Pn设施无降温>Pn露天;HR设施内>HR露天、PAR设施内<PAR露天、CO2浓度设施内<CO2浓度露天,夏季高温高光强是导致人面竹出现“午休现象”主要原因,设施内应采取降温控湿措施有利于人面竹提高光合效率。
关键词:  人面竹  设施栽培  净光合速率  温度  湿度  CO2浓度
DOI:
基金项目:国际竹藤中心基本科研业务费专项资金项目(1632010013)和国家十二五项目(2012BAD23B0503)
Diurnal variation of photosynthesis of Phyllostachys aurea grown insideand outside greenhouse and its influential factors in summer
YAN Yan,QIN Jin-zhou,SU Wen-hui,SU Hao-ran
(Anhui Taiping Experimental Station, International Centre for Bamboo and Rattan;School of Forestry and Landscape Architecture, Anhui Agricultural University)
Abstract:
In this paper, we explored the diurnal variation of photosynthesis of Phyllostachys aurea grown inside greenhouse, and clarified the difference of light intensity, temperature, humidity, CO2 concentration and other factors both inside and outside greenhouse, in order to provide reasonable cultivation methods and theoretical basis for facility cultivation of Phyllostachys aurea. The study was carried out in July, and the curve of the photosynthesis rate of Phyllostachys aurea was shown as a two-peak pattern on the conditions of both cooling measures and no cooling measures inside greenhouse, however, the characteristics of the curve of the photosynthesis rate of Phyllostachys aurea was not obvious in the open air. Average daily Pn inside greenhouse with cooling measure>Pn inside greenhouse without cooling measure>Pn in the open-air. Average daily, HR inside greenhouse>HR in the open-air, PAR inside greenhouse<PAR in the open-air, CO2 concentration inside greenhouse<CO2 concentration in the open-air. Therefore, the cooling and moistening measures should be taken to improve photosynthetic efficiency of Phyllostachys aurea inside the greenhouse. Besides, high-temperature and high light intensity are the main reasons for its phenomenon of “midday nap” in summer.
Key words:  Phyllostachys aurea  facility cultivation  Pn  temperature  humidity  CO2 concentration

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