中国生态农业学报（中英文）2025，Vol.33Issue(3)：475-483,9.DOI:10.12357/cjea.20240517
不同玉米品种间作遮荫对幼龄茶树农艺性状和土壤养分的影响
Effect of intercropping shading with different maize varieties on the agronomic traits of young tea trees and soil nutrients
摘要
Abstract
Tea trees are widely planted worldwide,and the survival rate of young tea trees is relatively low owing to the influence of the ecological environment and varietal differences.Artificial sunshade net coverage increased the survival rate of young tea trees.Sunshade nets are prone to environmental pollution;therefore,maize,suitable for ecological shading,has come into the public view.Maize is suitable for intercropping because of its wide planting range,high yield,multiple uses,and ability to improve nutrient utiliza-tion and reduce pests and diseases.To screen a maize variety for intercropping shading modes of young tea trees and investigate the impact of intercropping on the soil and growth of young tea trees,a field experiment was conducted with three treatments of maize varieties of'Guidan 162'(T162),'Guinuo 231'(T231),and'Guitian 228'(T228)intercropping with young tea trees,and a monocul-ture of young tea trees as the control(CK),comprising four treatments.The analysis focused on the basic physical and chemical prop-erties of the soil,biomass,and shading effects of maize and the growth and incidence of pests and diseases of young tea trees.The results indicated the following:1)The maize variety'Guidan162'demonstrated better growth performance when intercropped with young tea trees,with superior plant height,wider plant width,heavier bract weight,shade effect and yield compared to other treat-ments.Thus,T162 is a suitable maize variety for young tea tree shade intercropping.2)Intercropping maize with young tea trees im-proved soil moisture content and nutrient availability while reducing soil electrical conductivity and temperature,compared to the tea monoculture.3)The survival rate of young tea trees in the three treatments of maize varieties increased by 9.65%-16.67%compared to CK,and the incidence of pests and diseases decreased by 45.49%-47.28%.Among the intercropping treatments,T231 showed the highest survival rate,whereas T162 showed the lowest incidence of pests and diseases of young tea trees.Additionally,the heights of young tea trees in the T228 and T162 treatments were 20.76%and 18.88%higher than those in the CK treatment,respectively.In conclusion,in the initial stage of a new tea plantation,intercropping maize as a shading measure can effectively reduce light intensity on the tea plant canopy under hot climatic conditions,mitigating the risk of sunburn and improving survival rates of tea tree.Moreover,it enhances soil physicochemical properties and nutrient availability.These findings provide a theoretical basis for select-ing appropriate crops for intercropping models in young tea plantations.关键词
幼龄茶树/玉米间作/遮荫/茶树定植/生长特性Key words
young tea tree/maize intercropping/shading/planting of young tea trees/growth characteristics分类
农业科学引用本文复制引用
王明释,陈远权,梁贤智,骆妍妃,巫虹颖,黄静,吴玲玲,阳景阳,农玉琴,陈杏..不同玉米品种间作遮荫对幼龄茶树农艺性状和土壤养分的影响[J].中国生态农业学报（中英文）,2025,33(3):475-483,9.基金项目
广西自然科学基金项目(2024GXNSFBA010331)、广西重点研发计划项目(桂科AB23026086)和广西农业科学院基本科研业务专项(桂农科2021YT164,桂农科 2021YT162)资助 This research was supported by Guangxi Natural Science Foundation(2024GXNSFBA010331),Guangxi Key Technologies R&D Program(GuiKe AB23026086),and the Basic Research Business Special Project of Guangxi Academy of Agricultural Sciences(GuiNongKe 2021YT164,GuiNongKe 2021YT162). （2024GXNSFBA010331）
