排灌机械工程学报2026，Vol.44Issue(6)：639-648,10.DOI:10.3969/j.issn.1674-8530.25.0118
根区水分空间匹配的深层灌溉促进柑橘增产提质
Deep subsurface irrigation matched to root-zone water distribution promotes yield increase and quality improvement of citrus
摘要
Abstract
To investigate the effects of deep subsurface irrigation on soil water storage,fruit yield,and quality in citrus orchards in hilly red soil regions,an experiment was conducted in a typical citrus or-chard in Jiangxi Province.The experiment included three irrigation depths set as follows:D1(25 cm),D2(50 cm),and D3(100 cm);three irrigation levels were used as follows:W3(full ir-rigation:upper limit of 100％θf,where θf is field capacity),W2(mild deficit irrigation,75％of W3),and W1(severe deficit irrigation,50％of W3),resulting in a total of nine treatments.The re-sults show that D2W2 treatment(50 cm irrigation depth combined with mild deficit irrigation)creates a stable moist zone in the 0-120 cm soil layer that effectively covers the main root zone of citrus(0-80 cm).The root zone water storage under this treatment increases by 8.74％and 16.43％compared to D1W2 and D3W2 treatment,respectively.This treatment also achieves the highest yield per plant(58.13 kg/plant),the highest sugar content(15.93％),the lowest acidity(0.46％),and the optimal sugar-acid ratio(34.63).D2W1 treatment has the highest irrigation water use efficiency at 11.15 kg/m3,which is slightly higher than that of D2W2 treatment(11.03 kg/m3).TOPSIS comprehensive evaluation indicates that D2W2 treatment is the optimal irrigation mode with the highest score.The study recommends promoting a deep irrigation mode with a 50 cm depth combined with mild water defi-cit in citrus orchards in hilly red soil regions to synergistically achieve water conservation,yield in-crease,and quality improvement.关键词
深层灌溉/土壤储水量/产量与品质/柑橘/红壤丘陵区/根区水分Key words
deep subsurface irrigation/soil water storage/yield and quality/citrus/hilly red soil regions/root-zone water分类
农业科技引用本文复制引用
葛佩琳,郏子晨,帅佳明,朱瑾瑾,彭遥,胡优..根区水分空间匹配的深层灌溉促进柑橘增产提质[J].排灌机械工程学报,2026,44(6):639-648,10.基金项目
国家自然科学基金资助项目(42307392) （42307392）
江西省自然科学基金资助项目(20224BAB214078) （20224BAB214078）
江西省水利科技项目(202526YBKT12 （）
202526TGKT03 （）
202526YBKT11 （）
202526YBKT07). （）
