| Canopy structure and photosynthetic characteristics of spring maize during late growth stage under the high yielding and high efficiency cultivation |
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| DOI：10.7606/j.issn.1000-7601.2014.06.027 |
| Key Words: spring maize planting density canopy structure photosynthetic characteristics late growth stage |
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| Abstract: |
| The variation of canopy structure and photosynthetic characteristics of spring maize during late growth stage was determined, and the maize cultivar Zhengdan 958 was used with treatments of high yielding and high efficiency cultivation and farmer conventional method in the 2012 and 2013. The results showed that the plant height and ear position of high yielding and high efficiency cultivation were slightly higher than that of the conventional method in silking stage and milk stage. Compared with conventional cultivation, leaf index of spring maize under high yielding and high efficiency cultivation was larger, especially after silking stage. Leaf angle of different positions of high yielding and high efficiency cultivation were lower than that of conventional method, while that of net photosynthetic characteristics showed the opposite trend. Yields of spring maize of high yielding and high efficiency cultivation in 2012 and 2013 were 14.009 t·hm-2 and 13.255 t·hm-2, respectively, being higher than that of conventional method. |
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