排灌机械工程学报2025，Vol.43Issue(5)：515-524,10.DOI:10.3969/j.issn.1674-8530.23.0224
吐哈地区葡萄生理生长特性对水氮耦合效应的响应
Impact of water-nitrogen interaction on physiological growth characteristics of grapes in Tuha region
摘要
Abstract
To evaluate the impact of different water and nitrogen coupling strategies on the physiologi-cal growth of drip-irrigated grapes in the Turpan-Hami region of Xinjiang,″Seedless White″grapes were selected as the experimental material,employing two factors:irrigation levels and nitrogen appli-cation rates.The irrigation treatments included full irrigation(D0),mild regulated deficit irrigation during shoot growth(D1),and moderate regulated deficit irrigation(D2).A total of nine experimental treatments were implemented,comprising conventional nitrogen application(N0),a 10%reduction in nitrogen application rate(N1),and a 20%reduction in nitrogen application rate(N2),with each treatment replicated three times.The control treatment(CK)was managed according to conventional practices within the park(D0N0).Additionally,a two-factor completely randomized block design experiment was employed.The results reveale that,in comparison to the traditional water and nitrogen management(CK),the application of mild deficit irrigation combined with 270 kg/hm2 nitrogen(D1 N1)results in a reduction in the relative water content and intercellular CO2 concentration in grape leaves.However,this treatment leads to an increase in leaf area index,net photosynthetic rate,transpiration rate,and stomatal conductance.The grape yield for the D1 N1 treatment is 31 132 kg/hm2,which does not differ significantly compared with the CK treatment.Nonetheless,the irrigation water use efficiency improves by 10.25%,and the partial factor productivity of nitrogen in-creases by 10.78%relative to the D1 N1 treatment.In addition,path analysis shows that the leaf area index,net photosynthetic rate,and transpiration rate directly influence grape yield,while the relative water content,stomatal conductance,and intercellular CO2 concentration are indirect factors.In sum-mary,the combination of mild deficit irrigation and 270 kg/hm2 nitrogen application proved to be the optimal strategy is the best under the experimental conditions,maintaining stable yields and saving 10%of both in water and nitrogen resources.关键词
水氮耦合/产量/水氮利用效率/葡萄/通径分析Key words
water and nitrogen coupling/yield/water and nitrogen use efficiency/grape/path analysis分类
园艺学与植物营养学引用本文复制引用
许宇双,叶含春,王振华,李文昊,陈朋朋,李海强,王东旺,谢忠,郑继亮..吐哈地区葡萄生理生长特性对水氮耦合效应的响应[J].排灌机械工程学报,2025,43(5):515-524,10.基金项目
兵团财政科技计划项目(2021AA0030) （2021AA0030）
兵团第十三师水资源管理中心委托项目(SLJCXM-2018) （SLJCXM-2018）
哈密红星勘测设计有限责任公司委托项目(HXSJ-2023) （HXSJ-2023）
