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.
近20年来陕西中部地区主要农作物生育期变化趋势分析
- Title:
- Change in Growth Stages of Major Crops in the Last 20 Years in the Middle Region of Shaanxi Province
- 分类号:
- S501
- 摘要:
- 利用陕西省中部地区8个农业气象观测站1992-2010年冬小麦、夏玉米的生育期观测资料，分析了这两种作物主要生育期的变化趋势。结果表明：该地区冬小麦全生育期有不断缩短趋势，变化速率约为每10 a缩短2.96 d，各个站点变化趋势基本一致，但减少的速度不尽相同，其中凤翔站变化趋势较为显著（显著性达0.05水平）；冬小麦其它各生育阶段也都呈现出比较一致的变化趋势，其中播种-出苗、返青-拔节、拔节-抽穗、返青-成熟阶段呈缩短趋势，抽穗-乳熟、乳熟-成熟、播种-越冬阶段呈延长趋势，其余生育阶段变化趋势不明显。该地区夏玉米全生育期呈较一致的延长趋势（显著性超过0.05），增加速率约为4.29 d/10 a，延长的时间主要在播种-三叶、七叶-拔节、乳熟-成熟阶段，其余生育阶段变化趋势不明显。
- 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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备注/Memo
收稿日期:2011-3-27;修回日期:2011-4-25
基金项目:中荷联合主题研究项目（中国科学院对外合作重点项目计划，GJHZ1018）；Netherlands Organization for Scientific Research，NWO， OND1339291）；国家科技支撑计划项目（2006BAD09B00）；欧盟第六框架计划项目（EUFP6，37046）
作者简介:蒋冲（1987- ），男，硕士研究生，研究方向：GIS和遥感技术在水土保持中的应用。E-mail：cba8702@nwsuaf.edu.cn
通讯作者:王飞（1971- ）,男,博士,副研究员,硕士生导师,主要从事水土保持环境效应评价、荒漠化防治和气候变化等研究。E-mail：wafe@ms.iswc.ac.cn