摘要
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。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,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。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。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参考。
The objective is to make a drought risk zone map of sugarcane in Liuzhou,and to provide certain references for the prevention of drought disaster and the optimization of sugarcane planting layout.First,we used the data of 8 meteorological stations in Liuzhou from 1961 to 2014 in combination with the development period of sugarcane,and adopted the water deficit index and its probability and the weight coefficient of each growth stage as the evaluation indexes,to construct the sugarcane drought risk index of Liuzhou.Then,the risk zone map was made.The results show that the 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 belong to high-risk zone,the southwest of Sanjiang County and most areas of Rongan County belong to medium-risk zone,and most areas of Rongshui County and a small part of western Rongan County belong to low-risk zone.The spatial difference of drought risk is large in Liuzhou.The study could provide a reference for rational sugarcane planting layout and irrigation plan.
作者
李家文
黄维
吴炫柯
刘永裕
Li Jiawen;Huang Wei;Wu Xuanke;Liu Yongyu(Liuzhou Meteorological Bureau,Liuzhou Guangxi 545001;Liuzhou Agrometeorological Experimentation Station,Liuzhou Guangxi 545003)
出处
《中国农学通报》
2019年第22期96-105,共10页
Chinese Agricultural Science Bulletin
基金
2017年柳州市气象科研项目“柳州市甘蔗干旱风险区划”(201704)
关键词
柳州市
水分亏缺指数
干旱
风险区划
甘蔗
Liuzhou
crop water deficit index
drought
risk zone
sugarcane