Study of Canopy Structure and Physiological Characteristics of Spring Maize at Late-growth Stage under Different Cultivation Patterns

doi:10.3969/j.issn.1000-7091.2012.01.027

Abstract

Abstract: The Jinshan 27 was grown under farmer cultivation(NH), high yield and high efficiency(GCGX), higher yield(ZGC) and super-high yield and high efficiency(ZGCGX) condition in 2009 and 2010, to study the indexes of canopy structure and physiological characteristics of different cultivation patterns. The results showed that content of chlorophyll of leaf was ZGCGX>ZGC>GCGX>NH at different stage and different leaf position, and three-ear leaves was more obvious. Content of chlorophyll of leaf position of four cultivation patterns were silking stage higher than milking stage. In the silking stage and milking stage, the net photosynthetic rate of leaf was ZGCGX>NH>GCGX>ZGC, the difference of four cultivation patterns was not significant in silking stage, the net photosynthetic rate of ZGCGX and NH were significant higher than GCGX and ZGC. Canopy photosynthetic ability of different cultivation patterns was ZGCGX>ZGC>GCGX>NH, and super high yield and high efficiency pattern was significant higher than NH, GCGX and ZGC. From the silking to 40 days after the silking, SOD activity of four cultivation patterns was ZGCGX>ZGC>GCGX>NH, SOD activity of super high yield and high efficiency pattern was slightly higher than GCGX, and significant higher than ZGC and NH, with the leaf position drop, the different of four cultivation patterns increased. MDA content of farmer cultivation was highest, and super high yield and high efficiency was lowest.

Key words: Cultivation patterns, Spring maize, Late-growth, Canopy, Physiological characteristics

CLC Number:

S513

ZHANG Yu-qin, YANG Heng-shan, BI Wen-bo, ZHANG Rui-fu, FAN Xiu-yan, XIAO Li, GAO Ju-lin, LIU Zhi-xiong. Study of Canopy Structure and Physiological Characteristics of Spring Maize at Late-growth Stage under Different Cultivation Patterns[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(1): 145-150. doi: 10.3969/j.issn.1000-7091.2012.01.027.

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