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

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

Abstract

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

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

Figures/Tables 11

References 30

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生育阶段	苗期（播种—开花）	花针期（开花—下针）	结荚期（下针—结荚）	饱果期（结荚—成熟）
日期/ (月.日)	4.24—5.30	5.31—6.15	6.16—7.25	7.26—9.3
天数/d	37	16	40	40

生育阶段	苗期（播种—开花）	花针期（开花—下针）	结荚期（下针—结荚）	饱果期（结荚—成熟）
日期/ (月.日)	4.24—5.30	5.31—6.15	6.16—7.25	7.26—9.3
天数/d	37	16	40	40

结果对比	时间/地点	苗期	花针期	结荚期	饱果前期	饱果后期
任罡^[19]	2006年/山西临县	2.67~3.13	3.14~4.45	4.39~5.37	2.89~4.01
张成宝^[18]	1975—1984年/山东栖霞县	1.90	4.10	>5.00	>4	2.4
本研究	1973—2022年/冀东地区	2.14	4.43	4.49	3.33

结果对比	时间/地点	苗期	花针期	结荚期	饱果前期	饱果后期
任罡^[19]	2006年/山西临县	2.67~3.13	3.14~4.45	4.39~5.37	2.89~4.01
张成宝^[18]	1975—1984年/山东栖霞县	1.90	4.10	>5.00	>4	2.4
本研究	1973—2022年/冀东地区	2.14	4.43	4.49	3.33

	全生育期	苗期	花针期	结荚期	饱果期
有效降水量	16.7	45.7	39.5	21.3	21.8
需水量	7.4	22.5	10.3	9	7.9
降水耦合度	14.6	29	41.6	22.5	18.2