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中国农学通报 ›› 2019, Vol. 35 ›› Issue (22): 96-105.doi: 10.11924/j.issn.1000-6850.casb19030091

所属专题: 农业气象 农业生态

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

柳州市甘蔗干旱风险区划--基于作物水分亏缺指数

李家文1,2, 黄维2   

  1. 1.柳州市气象局;2.柳州市农业气象试验站
  • 收稿日期:2019-03-21 修回日期:2019-05-28 接受日期:2019-06-11 出版日期:2019-08-13 发布日期:2019-08-13
  • 通讯作者: 黄维
  • 基金资助:
    2017 年柳州市气象科研项目“柳州市甘蔗干旱风险区划”(201704)。

Drought Risk Zone of Sugarcane in Liuzhou Based on Crop Water Deficit Index

  • Received:2019-03-21 Revised:2019-05-28 Accepted:2019-06-11 Online:2019-08-13 Published:2019-08-13

摘要: 【目的】制作柳州市甘蔗干旱风险区划图,为甘蔗的防旱避灾和种植布局的优化提供科学参考。【方法】利用柳州市8个气象观测站1961-2014年的气象资料,结合甘蔗的发育期,同时,在水分亏缺指数理论基础上,以水分亏缺指数及其发生的概率和各生育阶段的权重系数为评价指标,构建柳州市甘蔗干旱风险指数,最后制作风险区划图。【结果】伸长期和成熟期水分亏缺指数较大,干旱频率较高;柳州市区以东和鹿寨县以南的地区、柳城县中部处于高风险区,三江县西南部、融安县大部分处于中风险区,融水县大部分地区和融安县以西的小部分地区处于低风险区。【结论】柳州市干旱风险空间差异较大,区划结果可为合理安排种植布局、制定科学灌溉用水调配计划提供科学参考。

关键词: 纤维素降解, 纤维素降解, 细菌菌群, 高通量测序, 堆肥, 芽孢杆菌科

Abstract: 【Objective】 The objective of this study was to make a drought risk zone map of sugarcane in Liuzhou, and to provide scientific reference for the prevention and avoidance of sugarcane drought and the optimization of planting layout. 【Method】 Using the meteorological data of 8 meteorological stations in Liuzhou from 1961 to 2014 and combining with the development period of sugarcane, and on the basis of water deficit index theory, the drought risk index of sugarcane in Liuzhou was constructed by taking the water deficit index with its probability and weight coefficient of each growth stage as the evaluation index. Finally, the risk zone map was made. 【Result】 Water deficit index and drought frequency are much higher in elongation and maturity period. The east of Liuzhou City, the south of Luzhai County and the central part of Liucheng County are in high-risk zone. The southwest of Sanjiang County and most areas of Rongan County are in medium-risk zone. Most areas of Rongshui County and the small areas of west of Rongan County are in low-risk zone. 【Conclusion】 The spatial difference of drought risk is high in Liuzhou. The results of the regionalization can provide scientific reference for rational arrangement of planting layout and formulation of scientific irrigation water allocation plan.