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[1]JIANG Chong,WANG Fei,MU Xing-min,et al.Change in Growth Stages of Major Crops in the Last 20 Years in the Middle Region of Shaanxi Province[J].Research of Soil and Water Conservation,2011,18(05):67-71,75.

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Change in Growth Stages of Major Crops in the Last 20 Years in the Middle Region of Shaanxi Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 05 Page number: 67-71,75 Column: Public date: 2011-10-20

Title:: Change in Growth Stages of Major Crops in the Last 20 Years in the Middle Region of Shaanxi Province

Author(s):: JIANG Chong¹, WANG Fei^1,2, MU Xing-min^1,2, JIAO Qiao¹; 1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: winter wheat; summer maize; growth period; trend; middle region of Shaanxi Province

CLC:: S501

DOI:: -

Abstract:: Based on the agricultural meteorological observation data of winter wheat and summer maize in the middle region of Shaanxi Province from 1992 to 2010, the growth stage changes of two major crops, winter wheat and summer maize, had been analyzed. The results showed that the entire growth period of winter wheat in this region reduced by 2.96 days per decade. The changing trends in most sites are very similar, but the rate is different. The periods from sowing to emergence, turning green to jointing, jointing to heading, turning green to ripe were shortened, but the periods from heading to milky maturity, milky maturity to ripe, sowing to overwintering were extended. The entire growth period of summer maize was extended by 4.29 days per decade significantly. The periods from sowing to three leaves, seven leaves to jointing, milky maturity to ripe were extended, but the changing rate of other growth periods of summer maize were not obvious.

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