海南白沙黎族自治县茶叶需水量及灌溉定额研究

Study on the water requirement and irrigation quota of tea in Baisha Li Autonomous County,Hainan

作物需水量的确定是制定作物灌溉制度和促进作物生长的前提。根据FAO-56推荐的作物系数法,利用《海南省主要作物灌溉用水定额分析》统计的ET0值和90%典型年降雨资料,分析海南省白沙黎族自治县茶叶需水量和需水规律,探讨茶叶灌溉净定额。结果表明,茶叶全年需水量1238mm,茶叶全年灌溉定额541mm。该结论可为该地区茶园建立高效灌溉制度和实现精细化灌溉管理及后续配套建设提供参考。

Determining the water requirement of crops is a prerequisite for establishing crop irrigation systems and promoting crop growth.Based on the crop coefficient method recommended by FAO-56,and using the ET0 values and 90%typical annual rainfall data from Analysis of Irrigation Water Quotas for Major Crops in Hainan Province,this paper analyzes the water requirement and water demand patterns of tea in Baisha Li Autonomous County,Hainan Province,and discusses the net irrigation quota for tea.The results show that the annual water requirement for tea is 1238mm,and the annual irrigation quota for tea is 541mm.This conclusion can provide a reference for establishing efficient irrigation systems,achieving precise irrigation management,and subsequent supporting construction in the region’s tea gardens.