1980-2010年辽西地区春玉米发育期变化及其对产量影响

doi:10.11927/j.issn.1673-503X.2016.01.012

Abstract

Abstract: Based on observed data at 6 agricultural meteorological stations and spring maize yield data in the western Liaoning province from 1980 to 2010, variation of spring maize during growth period and its impact on yield were analyzed using methods of a climate trend rate and a correlation analysis.The results indicate that variation of the number of days during tasseling to flowering stage and flowering to milky maturity stage for spring maize has same trends at six stations of the western Liaoning province, while it is not the same in the other stages.Variation of number of days during different stages for spring maize is significant in Jianchang and Suizhong stations.The number of days of whole growth stage for spring maize is in an increasing trend except in Fuxin station.The trend rate is 5.00 days per decade in Zhangwu station, 7.03 days per decade in Jianchang station and 6.57 days per decade in Suizhong station, and they all pass through a significance test of 0.01 level.Anomalies of days of whole growth stage for spring maize change obviously in all stations of the western Liaoning province, and they are different in different growth stages.Anomalies of days of various growth stages change from negative to positive during 1980 to 2010.

Key words: Spring maize, Growth stage, Yield, Climate trend rate

CLC Number:

S162.5⁺3

ZHAO Xian-li, LI Li-guang, WANG Hong-bo, ZHAO Zi-qi, CAI Fu, YU Wen-ying, ZHANG Xiao-yue, DING Kang-kang, LI Jing. Change of spring maize during growth periods and its impact on yield from 1980 to 2010 in western Liaoning province[J]. Journal of Meteorology and Environment, 2016, 32(1): 84-88.

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Change of spring maize during growth periods and its impact on yield from 1980 to 2010 in western Liaoning province

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