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曹永强,朱明明,李维佳.河北省典型区主要作物有效降雨量和需水量特征分析.生态学报,2018,(2).http://dx.doi.org/10.5846/stxb201701100079  
河北省典型区主要作物有效降雨量和需水量特征分析
Nearly 60 years Hebei Province main crop’s effective precipitation and water requirement law analysis
投稿时间:2017-01-10  修订日期:2017-08-28
DOI: 10.5846/stxb201701100079
关键词有效降雨量  需水量  缺水量  水分盈亏指数  鸡泽县
Key WordsEffective precipitation  Water requirement  Water deficit  Moisture loss index  Jize county
基金项目国家自然基金(51579126,51779114);中国气象局干旱气候变化与减灾重点实验室开放基金(IAM201511);中国科学院农业水资源重 点实验室2016 年对外开放基金(KFKT201602)
作者单位E-mail
曹永强 辽宁师范大学城市与环境学院 caoyongqiang@lnnu.edu.cn 
朱明明 辽宁师范大学城市与环境学院  
李维佳 辽宁师范大学城市与环境学院  
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摘要:
对作物全生育期内有效降雨量及需水规律的研究是进行合理灌溉及水资源优化配置的重要依据。本文以河北省鸡泽县为典型区域,利用FAO推荐的Penman-Monteith公式和分段单值平均作物系数法对冬小麦、夏玉米和棉花的有效降雨量及需水规律进行计算,并通过Morlet小波分析法对60年来鸡泽县有效降雨量及作物需水量进行周期分析。结果表明:近60年鸡泽县冬小麦在生育中期需水量最大,为210.22mm,需水量及有效降雨量均集中在4-5月份,缺水量以13.223mm/10a的速率减少;夏玉米在初始生长期需水量最大,为157.72mm,需水量及有效降雨量均集中在6-9月份,缺水量以7.002mm/10a的速率呈下降趋势;棉花在生育中期需水量最大,为367.50mm,需水量集中在6-8月份,有效降雨量集中在7-8月份,缺水量以20.401mm/10a的速率呈增加趋势;三种作物的有效降雨量、作物需水量均存在时间尺度为40年的周期变化。
Abstract:
Research on crop whole growth period in the effective precipitation and water requirement law is an important basis for reasonable irrigation and water resources optimal allocation. Taking Jize Country in Hebei Province as a typical area, calculated the winter wheat, summer crop and cotton’s effective precipitation and water requirement law by FAO Penman-Monteith equation and Segmented single value average crop coefficient method. And by using the Morlet wavelet analysis over the past 60 years Jize Country effective precipitation and crop water requirement for cycle analysis. The results show that: (1) In recent 60 years, the water requirement and effective precipitation of winter wheat crop in Jize County showed a declining trend, and there was a significant period change in 40 years. Although the water deficit was reduced by 13.223m/10a, the water deficit was alleviated. And effective precipitation were concentrated in the rapid development period and the middle period of growth (4-5 months), but the average effective precipitation in these two stages was only 15.48% of the crop wate requirement and the moisture loss index was negative, The natural precipitation in the growth period of winter wheat in Jize County can not meet the crop growth water requirement. The winter wheat should be artificially irrigated in April to May to ensure the normal growth of winter wheat.(2) In recent 60 years, the water requirement and effective precipitation of summer maize crop in Jize County showed a declining trend, and there was a significant period change in 40 years. Although the water deficit was reduced by 7.002m/10a, the water deficit was alleviated. And effective precipitation were concentrated in the initial growth period, rapid development period and the middle period of
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