Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (14): 161-166.doi: 10.11924/j.issn.1000-6850.2012-1873

Special Issue: 小麦 农业气象

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Variations of Winter Wheat Growth Stages Under Climate Changes in Shandong Province

  

  • Received:2012-05-16 Revised:2012-08-22 Online:2013-05-15 Published:2013-05-15

Abstract: In order to investigate the development of winter wheat growth stages under climate changes in Shandong Province and to determine possible causes of changes. Based on data of winter wheat growth stages and meteorological data from 1981 to 2011 in Shandong Province, diversification were investigated for two periods 1981-2000 (first period) and 2001-2011 (second period). The two periods difference contour map of winter wheat growing period were drawing ,and the spatial variations maps of climate resources difference between two periods were carry out. The results showed that: the average sunshine duration of second was 63.5 hours less than the first, and the accumulated temperature increased 120.3℃, the average precipitation decreased of 9.2 mm. Compared to the two periods winter wheat growth stages, the sowing stage had been delayed about 3.3 days. The green stage, jointing stage, flowering stage and maturity stage had different degrees of advance. The developmental stages of winter wheat were closely correlated with the temperature.

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