摘要
【目的】为探究栽培密度对四川盆地黄瓜光合和产量的影响。【方法】以黄瓜"川绿11号"为材料,设置5个栽培密度,测定分析不同密度下黄瓜上、中、下不同叶位叶片的叶绿素含量、叶面积、光合气体交换参数、叶绿素荧光参数及产量指标。【结果】栽培密度对黄瓜不同部位叶片光合机构的影响也是不同,黄瓜植株从下至上,叶片净光合速率的降低是分别是非气孔因素、非气孔和气孔因素共同作用、气孔因素作用所导致;不同叶位叶片可能存在一种光合补偿机制;随着黄瓜密度的下降,单株产量逐渐增加,但每667 m^2产量逐渐下降。【结论】揭示不同栽培密度对黄瓜不同叶位叶片的影响,为四川盆地春季黄瓜设施栽培密度选择提供理论依据。
【Objective】The present paper aims to explore the effects of planting density on photosynthesis and yield of cucumber in the Sichuan Basin.【Method】Cucumber‘Chuanlv No.11’taken as material,five cultivation densities were set up.The chlorophyll content,leaf area,photosynthetic gas exchange parameters,chlorophyll fluorescence parameters and yield indicators of different leaf positions of cucumber in different density were determined.【Result】The effect of planting density on the photosynthetic apparatus of different parts of cucumber was also different.The lowering of net photosynthetic rate of cucumber plants from bottom to top was caused by non-stomatal factors,non-stomatal and stomatal factors,and stomatal factors.There might be a photosynthetic compensation mechanism;As the density of cucumber decreased,the yield per plant increased gradually,but the yield per 667 m^2 gradually decreased.【Conclusion】The study reveals the effects of different cultivation densities on different leaf positions of cucumber and provides a theoretical basis for the selection of cucumber planting density in spring in Sichuan basin.
作者
张泽锦
黄阳
唐丽
李跃建
刘小俊
杨明方
ZHANG Ze-jin;HUANG Yang;TANG Li;LI Yue-jian;LIU Xiao-jun;YANG Ming-fang(Horticulture Research Institute,Sichuan Academy of Agricultural Sciences/Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province,Sichuan Chengdu 610066,China;Key Laboratory of Horticultural Crop Biology and Germplasm Enhancement in Southwest,Ministry of Agriculture,Sichuan Chengdu 610066,China)
出处
《西南农业学报》
CSCD
北大核心
2020年第4期725-733,共9页
Southwest China Journal of Agricultural Sciences
基金
四川省财政专项资金项目(2016CYTS-001)
现代农业产业技术体系专项资金(CARS-23-G32)。
关键词
栽培密度
叶绿素荧光
产量
黄瓜
Planting density
Chlorophyll fluorescence
Yield
Cucumber
