农学学报2025，Vol.15Issue(5)：91-100,10.
冀东地区近50a花生水分供需时空变化特征
Temporal and Spatial Variation Characteristics of Water Supply and Demand of Peanut in Eastern Hebei Province in Past 50 Years
摘要
Abstract
The aim of this study is to analyze the water supply and demand of peanut in eastern Hebei Province,in order to provide a scientific basis for the development of reasonable irrigation strategies.Based on the data from 16 national meteorological stations and Zunhua Agro-meteorological Station in the region,the temporal and spatial variation characteristics of water supply and demand of peanut in eastern Hebei Province from 1973 to 2022 were analyzed by using the Penman-Monteith formula and the segmented single-valued average crop coefficient method.The results showed that over the past 50 years,the mean values of effective precipitation and precipitation coupling degree of peanut in eastern Hebei Province in the whole growth period were 312.3 mm and 0.63,respectively,showing a decreasing trend(P<0.1);the mean value of water requirement was 462.9 mm,with a non-significant increasing trend;and the interannual variability of effective precipitation was greater than that of water requirement.The interannual trend of physical quantity in each growth stage was consistent with that of the whole growth period,but none of them was significant,and the interannual variability was significantly greater in the seedling stage and flower-needle stage than in the pod-setting stage and full-fruiting stage.The comparison of water supply and demand in different growth stages revealed that the precipitation coupling degree ranged from 0.08 to 0.97,and the order of their mean values was:full-fruiting stage>pod-setting stage>seedling stage>flower-needle stage.The spatial distribution of the precipitation coupling degree of peanut in eastern Hebei Province was lower in the south than in the north at the full-fruiting stage,and lower in the southwest than in the northeast part of the region at the other growth stages and the whole growth period,the high value area was mainly concentrated in the urban area of Qinhuangdao and the northern mountainous area of Qinhuangdao,while the low value area was located in Caofeidian and around the urban area of Tangshan.The probability of peanut drought in eastern Hebei Province showed an increasing trend;especially the increase of drought risk during flower-needle stage was more significant.Among the major peanut-producing counties in the region,the probability of drought occurrence was higher in Fengrun and Fengnan.关键词
冀东地区/花生/需水量/水分供需/灌溉策略/Penman-Monteith公式/降水耦合度/干旱风险/有效降水量Key words
eastern Hebei Province/peanut/water requirement/water supply and demand/irrigation strategy/penman-monteith formula/precipitation coupling degree/drought risk/effective precipitation分类
农业科技引用本文复制引用
费晓臣,马凤莲,郑艳萍,宿海良,王猛,何川..冀东地区近50a花生水分供需时空变化特征[J].农学学报,2025,15(5):91-100,10.基金项目
河北省重点研发计划项目乡村振兴技术创新专项(22327215D). （22327215D）
