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中国农学通报

中国农学通报 ›› 2024, Vol. 40 ›› Issue (23): 7-15.doi: 10.11924/j.issn.1000-6850.casb2024-0115

• 农学·农业基础科学 • 上一篇    下一篇

鲁西平原冬小麦水分生产力时空格局及其变化分解

武术兰1(), 任频频2(), 侯术海1, 王树森1, 宋佰联1, 黄峰3   

  1. 1 诸城市农村工作服务中心，山东诸城 262200
    2 济宁医学院，山东济宁 272067
    3 中国农业大学土地科学与技术学院，北京 100193
  • 收稿日期:2024-02-06 修回日期:2024-07-13 出版日期:2024-08-15 发布日期:2024-08-09
  • 通讯作者:
    任频频，男，1993年出生，山东济宁人，讲师，博士，研究方向：农业水土资源利用。通信地址：272067 山东省济宁市任城区荷花路133号 图文信息楼613办公室，Tel：0537-3616386，E-mail：。
  • 作者简介:

    武术兰，女，1971年出生，山东潍坊人，高级农艺师，硕士，研究方向：土壤与肥料研究与推广。通信地址：262200 山东省潍坊市诸城市密州街道府前街59号 鑫湖办公楼诸城市农村工作服务中心，Tel：0536-6168130，E-mail：。

  • 基金资助:
    国家重点研发计划“旱作区土壤肥力和生产力演变规律及肥沃耕层特征”(2016YFD0300801)

Spatiotemporal Patterns of Winter Wheat Water Productivity and Its Decomposition in Western Shandong Plain

WU Shulan1(), REN Pinpin2(), HOU Shuhai1, WANG Shusen1, SONG Bailian1, HUANG Feng3   

  1. 1 Zhucheng Rural Work Service Center, Zhucheng, Shandong 262200
    2 Jining Medical University, Jining, Shandong 272067
    3 College of Land Science and Technology, China Agricultural University, Beijing 100193
  • Received:2024-02-06 Revised:2024-07-13 Published:2024-08-15 Online:2024-08-09

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摘要：

提高作物水分生产力(Crop Water Productivity，CWP)是减少农业用水、实现可持续发展的重要途径，掌握CWP的时空特征则是通过管理生产和耗水提高CWP的重要前提。本文综合作物遥感蒸散数据和农业生产数据，分析了鲁西平原冬小麦CWP的时空格局，并利用因素分解方法探讨了单产和蒸散对CWP变化的直接贡献。结果表明：2002年以来，鲁西平原冬小麦单产显著提高(P<0.05)，推动冬小麦总产稳步提升，但2010年以后，单产贡献量逐渐减弱。2010年以后，种植面积具有正向效应（种植面积增加、总产增加，或种植面积减少、总产减少）的县域数目呈减少趋势。2006年以后，鲁西平原冬小麦CWP显著增加(P<0.05)，2016年达到1.64 kg/m3。空间分布特征表明，德州和济宁是CWP较高的“热点”地区。冬小麦CWP的变化直接受单产和蒸散的影响，2010年以后，单产具有正向效应（单产增加、CWP增加，或单产减少、CWP减少）的县域数量减少，蒸散具有正向效应（蒸散增加、CWP减少，或蒸散减少、CWP增加）的县域数目维持在较高水平，蒸散在CWP变化中起着越来越重要的作用。在单产增长趋于平缓的现状下，通过管理蒸散成为提升鲁西平原冬小麦CWP的重要途径，但也需要进一步挖掘单产的提升潜力。本研究可为鲁西平原冬小麦生产和耗水管理决策提供参考。

关键词: 水分生产力, 时空格局, 驱动因素, 因素分解, 冬小麦

Abstract:

Improving crop water productivity (CWP) is an important way to reduce agricultural water use and achieve sustainable development, and mastering the temporal and spatial characteristics of CWP is an important premise to improve CWP by managing production and water consumption. Based on remote sensing evapotranspiration (ET) and agricultural production data, the temporal and spatial patterns of CWP of winter wheat in western Shandong Plain were analyzed, and the contribution of ET and average yield to CWP’s variation was discussed by index decomposition analysis. The results showed that since 2002, the average yield of winter wheat increased significantly (P<0.05) in western Shandong Plain, which promoted the steady increase of the total yield of winter wheat. But after 2010, the contribution of average yield decreased gradually. After 2010, the number of counties with positive effect of planting area (planting area increasing and total yield increasing, or planting area decreasing and total yield decreasing) showed a decreasing trend. After 2006, winter wheat CWP increased significantly (P<0.05) in western Shandong Plain, reaching 1.64 kg/m3 in 2016. The spatial distribution of CWP showed that Dezhou and Jining were the “hot spots” with high CWP. Variation of winter wheat CWP was directly affected by average yield and ET. After 2010, the number of counties with positive effect of average yield (average yield increasing and CWP increasing, or average yield decreasing and CWP decreasing) decreased, and the number of counties with positive effect of ET (ET increasing and CWP decreasing, or ET decreasing and CWP increasing) remained at a high level. It showed that ET played a more important role in the changing of CWP. Under the current situation of flat yield growth, managing ET had become an important way to improve winter wheat CWP in western Shandong Plain, and it was also necessary to further explore the potential of increasing average yield. This study could provide reference for making decision of winter wheat production and water consumption management in western Shandong Plain.

Key words: water productivity, spatiotemporal pattern, driving factors, factor decomposition, winter wheat