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运用灰色系统理论,分析了干旱处理与正常管理下“沙金红”、“玛瑙”和“山杏”净光合速率(Pn)与气孔导度(Gs)、胞间CO2浓度(Ci)、蒸腾速率(Tr)、叶片温度(Tleaf)、大气CO2浓度(Ca)、水分含量(H2O)、空气相对湿度(RH)、光合有效辐射(PAR)等主要生理生态参数的灰色关联系数及关联度,明确了干旱处理与正常管理下影响杏净光合速率各生态因子的主次关系。结果表明:正常管理下影响杏净光合速率最大的分别是蒸腾速率、光合有效辐射和叶片温度,干旱处理下影响杏净光合速率最大的分别是CO2浓度、气孔导度和叶片温度,而且不同品种影响其净光合速率的生态因子主次关系不同,同一品种在不同栽培环境条件下影响其净光合速率的生态因子主次关系也不同,生产上应针对不同品种、不同发育阶段制定相应的配套栽培措施。
The gray system theory was used to analyze the relationship between Pn and Gs and the intercellular CO2 concentration under the treatments of “Shajinhong”, “Agate” and “Xingan” Gray correlation of major physiological and ecological parameters such as Ci, Tr, Tleaf, Ca2 +, H2O, RH and PAR, Coefficient and degree of correlation, clarified the primary and secondary relationships that affect the ecological factors of apricot net photosynthesis under drought and normal management. The results showed that under the normal management, the maximum net photosynthetic rate of apricot net were transpiration rate, photosynthetically active radiation and leaf temperature. The maximum of apricot net photosynthesis rate was CO2 concentration, stomatal conductance and leaf temperature under drought stress, The primary and secondary relationship of the ecological factors that affect their net photosynthetic rate are different. The primary and secondary relationship of the ecological factors that affect the net photosynthetic rate of the same species in different cultivation environments are also different, and corresponding cultivation should be made according to different varieties and different developmental stages Measures.