1College of Forestry,Henan University of Science and Technology,Luoyang 471003,Henan,China;2Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China;3College of Horticulture,Northwest A&F University,Yangling 712100，Shaanxi,China
Abstract：In this paper,the effects of different organic substrates on leaf photosynthesis and root ATPase activity of tomato using organic substrate culture added with corn stalk,wheat straw,mushroom residue,saw dust and dry dung were investigated.The results showed that tomato assimilation products were enhanced in organic substrates compared with the soil control.The photosynthetic rate,intracellular CO2 concentration and respiration rate were higher in organic substrate cultivation than control.Fv/Fm,ΦPSⅡ and qP were significantly increased in organic substrate cultivation.There was promotion effects of organic substrate cultivation on P-H+-ATPase，P-Ca2+-ATPase，V-H+-ATPase and V-Ca2+-ATPase activities.With higher tonoplast and plasma membrane ATPase activities,photosynthetic rate,intracellular CO2 concentration and Fv/Fm,ΦPSⅡ,qP,the photosynthetic efficiency and nutrient absorption of tomato cultivated in organic substrate were enhanced.As a result,tomato growth and its yield were greatly improved.
