Temporal and Spatial Variation Characteristics of Water Supply and Demand of Peanut in Eastern Hebei Province in Past 50 Years

FEI Xiaochen; MA Fenglian; ZHENG Yanping; SU Hailiang; WANG Meng; HE Chuan

doi:10.11923/j.issn.2095-4050.cjas2024-0047

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Journal of Agriculture ›› 2025, Vol. 15 ›› Issue (5) : 91-100. DOI: 10.11923/j.issn.2095-4050.cjas2024-0047

Temporal and Spatial Variation Characteristics of Water Supply and Demand of Peanut in Eastern Hebei Province in Past 50 Years

FEI Xiaochen ¹^,² ,
MA Fenglian ¹^,³ ,
ZHENG Yanping ² ,
SU Hailiang ² ,
WANG Meng ² ,
HE Chuan ²

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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.

Key words

eastern Hebei Province / peanut / water requirement / water supply and demand / irrigation strategy / penman-monteith formula / precipitation coupling degree / drought risk / effective precipitation

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FEI Xiaochen , MA Fenglian , ZHENG Yanping , et al . Temporal and Spatial Variation Characteristics of Water Supply and Demand of Peanut in Eastern Hebei Province in Past 50 Years[J]. Journal of Agriculture. 2025, 15(5): 91-100 https://doi.org/10.11923/j.issn.2095-4050.cjas2024-0047

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了解宁夏中南部地区马铃薯的需水规律和水分供需状况，可为合理安排补灌制度，提高水分利用率提供支持。采用FAO PM 56方法和农田水分平衡方程，通过细化K<sub>c</sub>系数，分析了马铃薯历年逐旬需水量、耗水量和水分盈亏变化。结果表明：马铃薯全生育期需水465.1~677.3 mm，与气温和降水量分别呈极显著正相关和负相关，需水量在高温年偏多，低温年偏少，在多雨年偏少，少雨年偏多。苗期和块茎膨大期水分盈亏为正值，6—8月上旬大部为负值，即有7—12个旬的水分亏缺超过10 mm/旬。缺水时段从南到北逐渐延长，缺水量逐渐增多，中部干旱带6—8月累积水分亏缺300 mm以上。为此，可选择耐旱品种，实施低耗水前茬休耕轮作、地膜覆盖、垄沟栽培、水分亏缺期节水补灌等措施，支撑马铃薯产业可持续发展。

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