水土保持研究2011，Vol.18Issue(5)：67-71,75,6.
近20年来陕西中部地区主要农作物生育期变化趋势分析
Change in Growth Stages of Major Crops in the Last 20 Years in the Middle Region of Shaanxi Province
摘要
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.关键词
冬小麦/夏玉米/生育期/趋势/陕西中部地区Key words
winter wheat/summer maize/growth period/trend/middle region of Shaanxi Province分类
农业科技引用本文复制引用
蒋冲,王飞,穆兴民,焦俏..近20年来陕西中部地区主要农作物生育期变化趋势分析[J].水土保持研究,2011,18(5):67-71,75,6.基金项目
中荷联合主题研究项目 （）
Netherlands Organization for Scientific Research NWO OND1339291） （）
国家科技支撑计划项目 （）
欧盟第六框架计划项目 （）
