灌溉排水学报2017，Vol.36Issue(6)：100-108,9.DOI:10.13522/j.cnki.ggps.2017.06.018
河南省冬小麦各生育期水分亏缺的空间分布及降水量突变检验
Spatial Distribution of Water Deficit of Winter Wheat in Different Growing Stages and Spatial Variation of Precipitation in Henan Province
摘要
Abstract
We calculated water deficit of winter wheat in Henan province by dividing its growing stage into early growth stage, tillering-wintering stage, and turning green-heading-maturity stage. Using the CROPWAT model and meteorological data measured from 1951—2013 at 20 sites across the province, we calculated the effective precipitation, water consumption and water deficit of the wheat at different growing stages. The spatial distribu-tion and variability of these factors were analyzed using ArcGIS 10.0, and the precipitation during different grow-ing stages was analyzed using the Mann-Kendall non parametric rank correlation test. The results for different growing seasons can be summarized as follows.①The effective precipitation decreased from southeast to north-west, the water consumption decreased from northwest to southeast except in the tillering-wintering stage, and the water deficit decreased from northwest to southeast.②The average effective precipitation during whole grow-ing stage, early growth stage, tillering-wintering stage and turning green-heading-maturity stage was 201.80 mm, 25.04 mm, 45.91 mm, 130.85 mm respectively, the associated average water consumptions were 432.52 mm, 39.23 mm,104.22 mm, 289.07 mm respectively, and the associated average crop water deficits were 230.72 mm,14.19 mm, 58.31 mm, 158.22 mm respectively. The Mann-Kendall test results showed that the precipitation de-creased in whole growing stage, increased in early growth stage, decreased in the tillering-wintering stage and the turning green-heading-maturity stage. The precipitation in different growth stages changed with UF. In summary, water at the turning green-heading-maturity stage is in deficit in north of the province including Anyang, Xinx-iang, but sufficient in the south including Zhumadian and Xinyang.关键词
冬小麦/有效降水量/需水量/缺水量/降水量/Mann-KendallKey words
winter wheat/effective precipitation/water consumption/crop water deficit/precipitation/different growth stages/Mann-Kendall分类
农业科技引用本文复制引用
白芳芳,乔冬梅,庞颖,刘春成,陆红飞,赵宇龙,陈思颖,王和洲..河南省冬小麦各生育期水分亏缺的空间分布及降水量突变检验[J].灌溉排水学报,2017,36(6):100-108,9.基金项目
国家"863"计划课题(2013AA102903) （2013AA102903）
中央级科研院所基本科研业务费专项(中国农业科学院农田灌溉研究所)资助项目(FIRI2016-28) （中国农业科学院农田灌溉研究所）
