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[1]ZHANG Ning-ning,LIU Pu-ling,WANG Shuan-quan,et al.Study on Photosynthetic Characteristics of Different Cash Crops[J].Research of Soil and Water Conservation,2012,19(03):269-273.

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Study on Photosynthetic Characteristics of Different Cash Crops

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 269-273 Column: Public date: 2012-06-20

Title:: Study on Photosynthetic Characteristics of Different Cash Crops

Author(s):: ZHANG Ning-ning¹, LIU Pu-ling¹, WANG Shuan-quan², CHEN Long-fei³; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS, Yangling, Shaanxi 712100, China;
2. College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: cash crops; photosynthesis; environmental factor; diurnal change

CLC:: Q945.11

DOI:: -

Abstract:: The photosynthetic characteristics of five traditional crops in Yangou Basin,Yan’an city and its correlation between the environmental factors were studied. The photosynthetic characteristics and environmental factors of five kinds of crops were investigated using Li-6400 portable photosynthesis system. The results showed: (1)the diurnal changes of Pn of Cucurbita pepo L. and Brassica oleracea were a single-peak curve which meant they didn’t have the phenomenon of ‘midday depression of photosynthesis’, and the diurnal changes of Pn of Solanum melongena L., Cucumis melo and Cucumis sativus Linn showed a typical double－peak curve with a visible ‘midday depression of photosynthesis’; (2) the diurnal changes of Tr was in the order of Cucumis melo>Cucurbita pepo L.>Brassica oleracea>Cucumis sativus Linn>Solanum melongena L; (3) the diurnal changes of Gs of Solanum melongena L.and Cucumis sativus Linn were flater than Brassica oleracea; (4) the diurnal changes of Ci of Brassica oleracea showed a double-peak curve, a ‘V-type’ curve was showed in Solanum melongena L., Cucumis sativus Linn and Cucumis melo, a ‘N-type’ curve was showed in Cucurbita pepo L.; (5)there was a significant (P<0.01) positive relationship between the Pn, PAR and RH in the five crops.

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