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A comparative study on photosynthesis of zaolupan peach grown inside and out-side greenhouse

ZHANG Shu yun 1,XU Ji zhong 2,CHEN Hai jiang 2,WANG Mei 2 (1 Department of Science and Technology Management,Agricultural University of Hebei,Baoding 071001,China; 2 College of Horticulture, Agricultural University of Hebei,Baoding 071001,China  
Under protected cultivation condition, chlorophyll content of Zaolupan peach increased; the light saturation point and compensation point turned lower from 900 and 32 μmol/(m 2·s) in open field to 556 and 14 μmol/(m 2·s) in greenhouse respectively On a sunny day ,the day change of net photosynthetic rate inside greenhouse presented was a two-peak pattern,the average Pn inside greenhouse was CO 2 5 51 μmol/(m 2·s),16 7% higherthan average Pn [CO 2 4 72 μmol/(m 2·s)]in open field.The main factors influencing photosynthesis and their daily variation were also studied
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