[1]CHAI Zhong-ping,WANG Xue-mei,SUN Xia,et al.Influence of Different Fertilization Treatments on Photosynthetic Characteristics of Fruit Enlargement Stage of Korla Fragrant Pear[J].Research of Soil and Water Conservation,2013,20(02):151-155.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 02
Page number:
151-155
Column:
Public date:
2013-04-28
- Title:
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Influence of Different Fertilization Treatments on Photosynthetic Characteristics of Fruit Enlargement Stage of Korla Fragrant Pear
- Author(s):
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CHAI Zhong-ping1, WANG Xue-mei2, SUN Xia1, CHEN Bo-lang1, SHENG Jian-dong1, XU Chao1
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1. College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi 830052, China;
2. College of Geography Science and Tourism, Xinjiang Normal University, Urumqi 830054, China
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- Keywords:
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Korla fragrant pear; fertilization; fruit enlargement stage; photosynthetic characteristics
- CLC:
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S661.2
- DOI:
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- Abstract:
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The diurnal variation curves of photosynthetic characteristics of fruit enlargement stage of korla fragrant pear under different fertilization treatments were measured by portable photosynthesis system CIRAS-2 under the field conditions. The results showed that the diurnal variation curves of Pn of Korla Fragrant Pear presented double-apex curves, double-apex was weak or not obvious, and had a phenomenon of photosynthetic ‘noon breaking’. The diurnal variation curves of Gs and Ls were same as Pn, they also showed double-apex curves, but the double-apex of Gs was obvious, the double-apex of Ls was weak. The diurnal variation curves of Ci were contrary with Pn, they showed double-valley curves. The diurnal variation curves of Tr presented single-apex curves, but the diurnal variation curves of WUE showed single-valley ones. It could cause obvious impacts on chlorophyll content, LAI and photosynthetic characteristics of Korla Fragrant Pear. Under different fertilization treatments, the roles of fertilizer N, P and K to chlorophyll content and LAI of Korla Fragrant Pear were in the order of N > P > K. The photosynthetic characteristics were different, the roles of fertilizer N,P and K in Pn and WUE of Korla Fragrant Pear leaves were in the order of K > P > N, Tr of Korla Fragrant Pear leaves was in the order of P > N > K, and Gs of Korla Fragrant Pear leaves was in the order of K > N > P.