应用生态学报2024，Vol.35Issue(8)：2150-2158,9.DOI:10.13287/j.1001-9332.202408.015
钢渣混合基质对大花绣球扦插生根的影响
Effects of steel slag mixed substrate on rooting of Hydrangea macrophylla cuttings
摘要
Abstract
To investigate the effect of steel slag used as substrate on the rooting of Hydrangea macrophylla cuttings,and to develop a new mixed substrate that can partially replace conventional cutting substrates and realize the high-efficient utilization of solid waste,we examined the physical and chemical properties of different mixed substrates containing 10％(T1),20％(T2),30％(T3),and 40％(T4)volume fractions of steel slag,and investigated the rooting of H.macrophylla'Red Beauty'cuttings growing on these substrates,with conventional cutting substrates(peat and perlite)as the control(CK).The results showed that pH value,electrical conductivity,and bulk density of the mixed substrates were significantly higher than those of CK.The aeration porosity of T2 was higher than other treatments,while the total porosity and water holding porosity differed little from others.Both fresh weight and dry weight of all the four treatments were higher than those of CK,with stem diameter being higher than that of CK(except T4),plant height showing no significant difference compared to CK(except T4),and leaf chlorophyll con-tent being significantly lower than CK.Root length ranked as T2＞CK＞T,＞T3＞T4,the root surface area and root volume both ranked as T2＞T1＞CK＞T4＞T3,the root tip ranked as T2＞CK＞T1＞T4＞T3.Both average root diameter and root activity were significantly higher than that of CK,with the highest value being observed in T2.Soluble sugar content in the leaves of T2 was the highest,followed by T4,T3,CK,and T1.The weight ranking of root growth indices was root activity＞average root diameter＞root volume＞root surface area＞root tip number＞root length.Redundancy analysis indicated that pH value,electrical conductivity,aeration porosity,and water holding porosity of substrates were key factors influencing root growth and development of cuttings.Our results suggested that substrates mixed with 10％to 40％steel slag could be used for H.macrophylla cutting propagation,and 20％(T2)being the best one because it could significantly improve the survival rate,growth status,and root develop-ment of cuttings.Steel slag would be a novel substrate to partially replace conventional unrenewable substrates such as peat and perlite for flower seedling propagation,which could reduce agricultural production cost and provide a high-value utilization way of industry solid waste.关键词
钢渣/绣球花/扦插生根/混合基质/固废Key words
steel slag/Hydrangea macrophylla/rooting of cutting/mixed substrate/solid waste引用本文复制引用
毛俊丹,陈慧杰,齐香玉,陈双双,冯景,金玉妍,邓衍明,张浩..钢渣混合基质对大花绣球扦插生根的影响[J].应用生态学报,2024,35(8):2150-2158,9.基金项目
本文由江苏省农业科技自主创新资金项目[CX(2022)2035]、冶金减排与资源综合利用教育部重点实验室项目(安徽工业大学)(JKF24-05)、新时代育人省级质量工程项目(研究生教育)(2023qygzz016)和马鞍山市农村与社会发展领域科技计划项目(2022KN-13)资助. （2022）
