中国生态农业学报（中英文）2024，Vol.32Issue(4)：675-686,12.DOI:10.12357/cjea.20230604
生姜‖柑橘间作对盛夏生姜生长及光合特性与产量的影响
Effects of ginger-citrus intercropping on ginger growth,photosynthesis traits and yield
摘要
Abstract
Intercropping is a traditional cultivation system wherein two or more plant genotypes are grown together for a certain period.Intercropping not only facilitates full use of the available land space,but also contributes to optimizing the light environment and im-proving yields.In this study,we conducted a field experiment to examine the effects of different cropping patterns of ginger on the growth,photosynthesis and yield of ginger under hot summer conditions in 2021 and 2022,based on the following three treatments:unshaded ginger monoculture(CK),shaded ginger monoculture(CK1),and intercropping of ginger and citrus(CI).To determine the effects of intercropping with citrus,the ginger plant growth characteristics,leaf burn,photosynthetic key enzymes,photosynthetic pigments,chlorophyll fluorescence parameters,osmoregulatory substances,antioxidant enzyme activity,and yield under different cropping patterns were investigated.The results revealed that compared with CK treatment,the CI treatment was associated with a significant reduction in canopy light intensity and plant leaf burn index by 55.40％-55.80％and 61.14％-70.20％,respectively(P＜0.05),whereas there were significant increases in the activities of key photosynthetic enzymes,photosynthetic pigment,net photo-synthetic rate,and maximum photochemical efficiency of 22.34％-50.55％,14.36％-50.00％,51.04％-70.64％,and 5.56％-7.79％,respectively(P＜0.05).Furthermore,the CI treatment contributed to the highest ginger yield(63.00-66.08 t·hm-2),which represented a significant increase of 23.28％-23.77％(P＜0.05)when compared with that obtained under the CK treatment.Moreover,we detec-ted no significant differences between the CK1 and CI treatments with respect to light intensity,leaf burn index,net photosynthetic rate,or yield.However,compared with the CK1 treatment,the CI treatment significantly enhanced the activities of key photosynthetic enzymes,photosynthetic pigment contents,and maximum photochemical efficiency by 26.88％,7.74％,and 2.47％,respectively(P＜0.05).In conclusion,intercropping with citrus can reduce light intensity at the ginger canopy during the hot season,reduce the de-gree of leaf burn,improve photosynthetic performance,and increase ginger yield.Among the three assessed planting patterns,ginger-citrus intercropping was identified as the most effective system,which contributed to achieving the highest crop yield,provided bene-ficial environmental conditions for ginger growth,and highlighted the production advantages of ginger under the citrus canopy.关键词
生姜/遮荫/生姜‖柑橘间作/光合特性/产量Key words
Ginger/Shading/Ginger-citrus intercropping/Photosynthetic characteristics/Yield分类
农业科技引用本文复制引用
彭祥燕,马慧慧,何雨婷,刘燃,梁红艳,朱永兴,朱学栋,刘奕清..生姜‖柑橘间作对盛夏生姜生长及光合特性与产量的影响[J].中国生态农业学报（中英文）,2024,32(4):675-686,12.基金项目
湖北省重点研发计划项目(2021BBA096,2022BBA0061)、荆州市2022年度科技计划项目(2022BB36)和重庆市调味产业体系创新团队项目(2023CQMAITS007)资助 This study was supported by the Key R&D Project in Hubei Province(2021BBA096,2022BBA0061),Jingzhou City 2022 Science and Technology Plan(2022BB36),and Chongqing Seasoning Industry System Innovation Team Project(2023CQMAITS007). （2021BBA096,2022BBA0061）
