|
|||||
|
|
| 冀南冬小麦冬前热量条件变化研究 | |
| 引用本文： | 孙东磊,杨雪川,陈文晖,梁 钰,陈 杰,杨永胜,甄文超.冀南冬小麦冬前热量条件变化研究[J].中国农学通报,2009,25(19):257-262. |
| 作者姓名： | 孙东磊 杨雪川 陈文晖 梁 钰 陈 杰 杨永胜 甄文超 |
| 作者单位： | 1. 河北省邢台市气象局,河北邢台,054000 2. 河北省南宫市气象局,河北南宫,055750 3. 河北省邢台市气象局,河北邢台,054000;河北农业大学,河北保定,070001 4. 河北农业大学,河北保定,070001 |
| 基金项目： | 国家"十一五"科技支撑重大项目课题"黄淮海中北部平原小麦玉米两熟丰产高效技术集成与示范研究" |
| 摘 要： | 近50 a来，冀南冬麦区日平均气温≥0℃终日、冬小麦冬前≥0℃积温和10-12月平均气温年际间波动较大，总体线性增长趋势不明显。但近5 a来，日平均气温≥0℃终日明显推迟，冬小麦冬前≥0℃积温显著增加。小波分析表明：日平均气温≥0℃终日变化存在4-7 a和14-17 a尺度周期变化规律，冬前≥0℃积温存在5-10 a和15-20 a尺度周期变化规律，未来3-5 a日平均气温≥0℃终日将处于偏晚期，冬前≥0℃积温呈增加趋势；10-12月平均气温存在3-5 a、8-10 a和20-25 a三类尺度周期变化规律，未来8-10 a升高趋势比较明显。综合分析表明，未来3-8 a冬小麦冬前热量仍呈增加趋势，但年际间波动明显，冬小麦播种期应根气象部门中长期气候预测年际间适当调整，避免热量资源波动对冬小麦生长发育的影响。 |
| 关 键 词： | 水产技术 水产技术 技术推广 “三农”问题 |
| 收稿时间： | 2009-05-07 |
| 修稿时间： | 2009-05-17 |
Analysis on the change of thermal resource of winter wheat growth period before over wintering in south Hebei province |
|
| Sun Donglei,Yang Xuechuan,Chen Wenhui,Liang Yu,Chen Jie,Yang Yongsheng,Zhen Wenchao.Analysis on the change of thermal resource of winter wheat growth period before over wintering in south Hebei province[J].Chinese Agricultural Science Bulletin,2009,25(19):257-262. | |
| Authors: | Sun Donglei Yang Xuechuan Chen Wenhui Liang Yu Chen Jie Yang Yongsheng Zhen Wenchao |
| Institution: | Sun Donglei, Yang Xuechuan, Chen Wenhui, Liang Yu, Chen Jie, Yang Yongsheng, Zhen Wenchao (1Xingtai Meteorological Bureau, Hebei province, Xingtai Hebei 054000; 2Shexian Meteorological Bureau, Hebei province, Shexian Hebei 056000; 3Nangong Meteorological Bureau, Hebei province, Nangong Hebei 055750; 4Agricultural University of Hebei, Baoding Hebei 071001) |
| Abstract: | In the recent 50 years, last day with the temperature ≥0℃, the accumulate temperature of ≥0℃ before Over wintering and monthly mean temperature form October to December changed with big annual fluctuation and the tendency of liner growth of was not obvious .However, In the recent 5 years, last day with the temperature ≥0℃ has been reduced obviously. the accumulate temperature of ≥0℃ before Over wintering increased largely and the monthly mean temperature form October to December was higher. The wavelet analysis indicated last day with the temperature ≥0℃ had mainly the interannual oscillation periods of 4-7 years and 14-17years.and the accumulate temperature of ≥0 before Over wintering had mainly the interannual oscillation periods of 5-10 years and 15-20years. the accumulate temperature of ≥0℃ before Over wintering seems to be increasing for large scale period. Monthly mean temperature form October to December had mainly the interannual oscillation periods of 3-5 years,8-10years and 20-25years and the coming 8-10 years is in the stage that mean temperature would has been higher. The obtained results showed that thermal resource of winter wheat the growth period before over wintering showed an increasing trend and these agrometeorological elements fluctuated in a big way greatly. Therefore, appropriate readjustment should be made on sowings time based on mid long climate prediction avoid affecting on winter wheat growth and development by interannual fluctuation of thermal resource. |
| Keywords: | wavelet analysiszz winter wheatzz thermal resourcezz |
| 本文献已被 维普 万方数据 等数据库收录！ | |
| 点击此处可从《中国农学通报》浏览原始摘要信息 | |
| 点击此处可从《中国农学通报》下载免费的PDF全文 | |