文献类型：期刊文献

中文题名：湛江甘蔗田水分供需状况与干旱特征分析

英文题名：Analysis on Sugarcane Water Supply-demand and Drought Character in Zhanjiang

作者：谢平[1];周鸿凯[1];陈晓宏[2]

机构：[1]广东海洋大学农学院,广东湛江524088;[2]中山大学地理科学与规划学院水资源与环境系,广州510275

年份：2015

卷号：34

期号：9

起止页码：93

中文期刊名：灌溉排水学报

外文期刊名：Journal of Irrigation and Drainage

收录：CSTPCD、、北大核心2014、北大核心、CSCD_E2015_2016、CSCD

基金：广东省科技计划项目(2013B020301005);华南地区水循环与水安全广东省普通高校重点实验室开放基金项目(KLB09002);广东海洋大学"创新强校工程"项目(GDOU2015050201)

语种：中文

中文关键词：甘蔗需水量;有效降水量;干旱;湛江

外文关键词：sugarcane water demand; effective precipitation; sugarcane drought; Zhanjiang;

中文摘要：甘蔗田水分供需状况及干旱规律是甘蔗抗旱栽培模式选择与灌溉管理的依据。利用湛江市1961—2010年的气象资料,采用作物系数与参考作物蒸发蒸腾量法(Kc-ETref)估算甘蔗需水量,参考作物蒸发蒸腾量用Penman-Monteith方法估算,分析了甘蔗田水分供需状况与干旱特征。结果表明,从多年平均看,年有效降水量满足甘蔗生长对水分的需求,但10、11、12月有效降水量小于甘蔗需水量;播种期、分蘖期、伸长期满足频次高,收获期其次,成熟期最低;春季无干旱频率为4%,重旱频率为72%,1990年后干旱频率有增加的趋势,春季20mm"透雨"最早出现在2月9日,最晚5月17日,中值为3月30日,4月10日"透雨"出现的保证率(累积频率)达到80%;秋季无干旱频率为36%,重旱频率为32%,秋季40mm"透雨"最早出现在9月18日,最晚11月26日,中值为10月22日,80%的年份"透雨"出现在11月12日之前。

外文摘要：Sugarcane water supply-demand and drought rules are basis of assisting sugarcane drought resistant cultivation mode decisions and sugarcane irrigation management.Sugarcane water supply-demand and drought character were analyzed using Zhanjiang meteorological station data during 1961—2010.Sugarcane water requirements were estimated by the two-step crop coefficient-reference ET（Kc-ETref）approach.Reference evapotranspiration was calculated by the Penman-Monteith method.The results showed that the average annual effective rainfall could satisfy the water demand of sugarcanes.But the effective rainfall in October,Novermber and December were less than the demand of sugarcanes.The satisfied frequency of effective rainfall was high in sowing period,tillering period and elongation period,and less in the harvest period,of which the lowest occurred in the mature period.The frequency of non spring drought was 4%,heavy drought was 72%,which increased after 1990 aAD.The earliest 20 mm-soaking rain occurred on February 9th,the latest was May 17 th,the median date was March 30 th.The cumulative frequency of soaking rain was 80% before April 10 th.The frequency of non autumn drought was 36%,heavy drought frequency was 36%.The earliest 40mm-soaking rain occurred on September 18 th,the latest was November26 th,median date was October 22 th.In 80% years,the soaking rain occurred before November 12 th.