不同粒径园林废弃物堆肥对天桥三角梅种植基质的影响分析

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Abstract

To promote theuse of garden wasteand optimize thecultivationsubstratefor Bougainvilea， this study investigated the feasibility of using garden waste compost products of different particle sizes to replace traditional high-cost or non-renewable substrate materials.Three substrate treatments，T1，T2，andT3，were establishedbyblending fieldsoil，vermicompost， and compost products of three particle size fractions in different volume ratios，with a conventional horticultural substrate serving as the control.The physicochemical properties of the substrates and the new shoot growth，flower number，and root system development of Bougainvillea glabra‘Rosa’were measured.The results showed that compared to the control，alltreatments significantly reduced substrate bulk densityand increased organic matter content.Among them，the T2 treatment exhibited the highest total porosity and water-holdingporosity，indicating the bestwater retention capacity.TheT3 treatmenthad the lowest bulk density， suggesting optimal aeration. Regarding plant growth promotion， the T2 treatment performed best，with new shoot length，flower number，and root dry weight and length after 40 days of controlled watering being significantly superior to those ofother treatments.Inconclusion， theT2 formulation，primarily composed ofa 5～20mm particle size compost product，best balances the water，air，and nutrientrelations of the substrate，effectivelypromoting the growthand floweringof Bougainvillea.It representsa valuable optimized substrate formula worthy of promotion.

Keywords Garden waste; Compost; Particle size;Substrate;Bougainvillea

文章亮点

1）创新性采用粒径分级法，系统研究园林废弃物堆肥对基质孔隙结构的调控机制，突破了传统基质配比研究的常规思路。（剩余8752字）