基于SPAC系统机理模型的火龙果灌溉管理研究  

Study of pitaya irrigation management based on SPAC system mechanism model

作　　者：张丽[1] 张廷强 ZHANG Li;ZHANG Ting-qiang(Guangxi Water and Power Design Institute Co.,Ltd.,Nanning 530023,China)

机构地区：[1]广西水利电力勘测设计研究院有限责任公司,南宁530023

出　　处：《广西水利水电》2021年第5期13-16,20,共5页Guangxi Water Resources & Hydropower Engineering

基　　金：基于物联网的特色农业智慧灌溉平台开发与示范(桂科AB18126093)。

摘　　要：火龙果作为广西重要的经济作物,合理的灌溉管理对于产量提升和水资源高效利用具有重要的意义。针对目前果园粗放式灌溉管理形式,本研究旨在利用SPAC系统机理模型,模拟分析不同灌溉情形下火龙果的水分胁迫情况,并结合实际管理条件,提出合理的灌溉管理方式。研究结果表明:无灌溉情况下,火龙果在夏秋季遭受明显的干旱;结合现状管理条件,灌溉发生时的水分胁迫指数下限阈值可设定为0.95,保证果园水资源高效利用和火龙果高产。Pitaya is an important economic crop of Guangxi.Reasonable irrigation management is of great significance for yield improvement and efficient utilization of water resources.In view of the current extensive irrigation management of orchard,SPAC system mechanism model was used to simulate the water stress of pitaya under different irrigation conditions.Combined with the actual management condition,reasonable management mode was put forward.The results of study demonstrate pitaya will suffered from significant drought in summer and autumn in case of without irrigation;the lower threshold of water stress index may be 0.95 when irrigation occurs.

关 键 词：火龙果 SPAC系统 机理模型 灌溉管理 

分 类 号：S274[农业科学—农业水土工程]