天津农业科学2024，Vol.30Issue(12)：25-29,35,6.DOI:10.3969/j.issn.1006-6500.2024.12.005
不同肥水用量与施用时期对设施小白菜生长、品质和水分利用效率的影响
Effects of Different Fertilizer and Water Amount and Time on Growth,Quality and Water Use Efficiency of Pakchoi
摘要
Abstract
In order to investigate the optimal timing for fertilizer and water application for high-yield and high-quality production of pakchoi(Brassica campestris L.ssp.Chinensis Makino)under reduced fertilizer conditions,three factors were considered:irrigation amount(W),fertilization amount(F),and different irrigation and fertilization amount(WF)with the same growth stages.An Orthogonal experimental design L9(34)was employed,with an additional control group(CK)receiving normal irrigation without fertilization,to study the effects of different fertilizer quantities,water irrigation amount and timings on the growth,quality and water use efficiency(WUE)of pakchoi under substrate cultivation conditions.The results showed that when the irrigation amount was 115%of the normal amount and the fertilizer amount was 80%of the normal amount,and the amount of irrigation and fertilization was 15%of the total amount in the early growth stage(0-10 d)42.5%in the middle growth stage(11-20 d)and 42.5%in the late growth stage(21-30 d),the single fresh weight of pakchoi peaked at 42.80 g.Additionally,the accumulation of nitrate nitrogen was minimized,while soluble sugar content maximized at 4.16 mg·g-1.The water use efficiency was higher than other treatments.Therefore,under reduced fertilizer conditions,appropriately increasing the irrigation amount and maintaining consistent application levels in the middle and late stages can enhance pakchoi yield,decrease nitrate nitrogen accumulation,elevate soluble sugar content,and improve water use efficiency.关键词
肥料减量/小白菜产量/可溶性糖/水分利用效率Key words
fertilizer reduction/pakchoi yield/soluble sugar/water use efficiency分类
农业科技引用本文复制引用
焦圣群,李际会,张磊,刘雪平,赵莉,张永涛..不同肥水用量与施用时期对设施小白菜生长、品质和水分利用效率的影响[J].天津农业科学,2024,30(12):25-29,35,6.基金项目
山东省现代农业产业技术体系蔬菜创新团队(SDAIT-05-18) （SDAIT-05-18）
