| 基于SPEI的河北省南部棉花生长季干旱特征分析 |
| |
| 引用本文： | 赵玉兵,张杰,刘连涛,孙东磊.基于SPEI的河北省南部棉花生长季干旱特征分析[J].农学学报,2022,12(12):56-62. |
| |
| 作者姓名： | 赵玉兵 张杰 刘连涛 孙东磊 |
| |
| 作者单位： | 1.河北省邢台市气象局，河北邢台 054000;2.河北农业大学农学院，河北保定 071000 |
| |
| 基金项目： | 国家自然科学基金面上项目“微根系（细根、根毛）形态和生理特征对棉花早衰的影响和机制”(318715690) |
| |
| 摘 要： | 旨在为棉花干旱灾害的监测、预报预警及防御提供理论依据。利用河北省南部8个气象站点1962—2020年的逐月气温、降水量数据，采用标准化降水蒸散指数(SPEI)，通过回归分析、Mann-Kendall检验等方法，分析了河北省南部棉花生长季（4—10月）干旱变化特征。结果表明，河北南部棉花全生育期的干旱频率为25%，其中重旱以上发生频率为6.8%;播种期、苗期、蕾期、花铃期和吐絮期干旱频率分别为35.6%、30.5%、32.2%、30.5%和32.2%;苗期气候在1976年发生干湿变化突变，1976年后呈显著湿润化趋势;蕾期气候在1968年发生干湿突变，1968年后呈显著湿润化趋势;棉花花铃期气候1982年后呈干旱化趋势，变化趋势越来越显著;棉花吐絮期气候1989年后呈干旱化趋势;棉花全生育期气候1982年后呈现持续干旱化趋势。20世纪90年代以来，棉花苗期、蕾期气候呈湿润化趋势，花铃期呈干旱化趋势，作物品种培育和栽培技术措施改进应重视这种变化趋势。
|
| 关 键 词： | 棉花 河北省 生长季 SPEI指数 干旱特征 |
| 收稿时间： | 2021-07-29 |
Analysis of Drought Characteristics During Cotton Growing Season in Southern Hebei Province Based on SPEI |
| |
| ZHAO Yubing,ZHANG Jie,LIU Liantao,SUN Donglei.Analysis of Drought Characteristics During Cotton Growing Season in Southern Hebei Province Based on SPEI[J].Journal of Agriculture,2022,12(12):56-62. |
| |
| Authors: | ZHAO Yubing ZHANG Jie LIU Liantao SUN Donglei |
| |
| Institution: | 1.Xingtai Meteorological Administration, Xingtai 054000, Hebei, China;2.College of Agronomy, Hebei Agricultural University, Baoding 071000, Hebei, China |
| |
| Abstract: | The purpose of the research is to provide a theoretical basis for monitoring, forecasting, early warning and preventing of cotton drought disasters. Based on the monthly temperature and precipitation data at eight meteorological stations in southern Hebei Province from 1962 to 2020, the standardized precipitation evapotranspiration index (SPEI), regression analysis and Mann-Kendall test were used to analyze the drought variation characteristics of cotton growing season (from April to October). The results showed that the drought frequency in the whole growth period of cotton was 25% in southern Hebei, and the frequency of above severe drought was 6.8%. The drought frequency of seeding stage, seedling stage, bud stage, flowering and boll-forming stage, and boll opening stage was 35.6%, 30.5%, 32.2%, 30.5% and 32.2%, respectively. The climate of seedling stage changed abruptly from dry to wet in 1976 and showed a clear trend of wetting after 1976. The climate of bud stage changed abruptly from dry to wet in 1968, and became moist after 1968. The climate of cotton flowering and boll-forming stage showed a drought trend after 1982, and the trend was more and more obvious. The climate of cotton boll opening stage showed a drought trend after 1989. The climate during the whole growth period of cotton showed a drought trend after 1982. Since the 1990s, the climate of cotton seedling stage and bud stage showed humidified trend, while the climate of cotton flowering and boll-forming stage showed arid trend. These trends should be highlighted in variety breeding and cultivation technique improvement. |
| |
| Keywords: | cotton Hebei Province growing season SPEI index drought characteristics |
|
| 点击此处可从《农学学报》浏览原始摘要信息 |
| 点击此处可从《农学学报》下载免费的PDF全文 |
|
