| Comparison research on light penetration and photosynthesis traits of four spring maize varieties under planting high density |
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| DOI：10.7606/j.issn.1000-7601.2013.05.011 |
| Key Words: high density planting spring maize light penetration photosynthesis traits yield |
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| Abstract: |
| Light penetration and photosynthesis characteristics of four spring ma
ize（neidan314、ningyu309、jinshan116、jinshan20） were studied under planting h
igh density (9.26×104 plants·hm-2). The results showed that the leaf
area per plant of neidan314 was largest, and distribution proportion of three e
ar leaves and above layer of neidan314 were highest. Leaf orientation value in d
ifferent layers of the four varieties of spring maize were above three ear leav
es>under three ear leaves>three ear leaves,which above three ear leaves and t
hree ear leaves were maximum in neidan314, and which were minimum in Ningyu309,
but under three ear leaves was largest in jinshan27, next to jinshan116 and w
hich was minimum at neidan314. Leaf area duration in different growth stages wer
e the largest from silking to milking stage, and varieties showed neidan314>ning
yu309>Jinshan116>Jinshan20; Except 08:00, the photosynthesis were maximum in nei
dan314. Average instantaneous solar energy utilization efficiency in turn was ne
idan314>ningyu309>Jinshan20. In four spring maize varieties, neidan314 had bett
er light penetration, stronger photosynthetic capacity and the highest yield, wh
ich was the first species of high density cultivation in the research area. |
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