亚热带农业研究2025，Vol.21Issue(4)：253-260,8.DOI:10.13321/j.cnki.subtrop.agric.res.2025.04.005
基质和激素配比对马大杂交相思扦插生根的影响
Effects of different substrate and phytohormone combinations on the rooting of Acacia mangium×A.auriculiformis hybrid cuttings
摘要
Abstract
[Purpose]This study explored the effects of different substrate combinations and exogenous phytohormone treatments on the rooting and seedling growth of Acacia mangium×A.auriculiformis hybrid cuttings,aiming to provide a basis for establishing an ef-ficient cutting seedling-raising system for this tree species.[Method]An L9(34)orthogonal design was adopted to compare the effects of different concentrations(100,200,and 400 mg•L-1)of 3-indolebutyric acid(IBA)and 1-naphthaleneacetic acid(NAA);rooting and soaking time(10,30,and 60 min)on the rooting rate,seedling height,and ground diameter of A.mangium×A.auriculiformis hybrid cuttings.Moreover,the effects of different types of cuttings(tender branches and semi-woody branches)as well as different substrate combinations(yellow soil,vermiculite,and perlite)on the rooting rate of A.mangium×A.auriculiformis hybrid cuttings were explored.[Result]The effects of the three factors affecting the rooting rate of A.mangium×A.auriculiformis hy-brid cuttings followed the trend of IBA concentration>soaking time>NAA concentration.The optimal treatment combination was T2(100 mg•L-1 IBA+200 mg•L-1 NAA,soaking for 30 min),which showed the rooting rate of 73.33%.After one year of growth,T2 treatment demonstrated the highest seedling height and ground diameter,with significant differences compared with CK.Tender branches as cuttings were significantly better than semi-woody branches,and the rooting rate of tender branches in clone 5 was the highest.The optimal yellow soil∶vermiculite∶perlite volume ratio was 1∶1∶1,under which the rooting rate reached 71.11%.[Conclusion]Soaking the tender branches of clone 5 in a mixture of 100 mg•L-1 IBA and 200 mg•L-1 NAA for 30 min and then raising the cuttings in a substrate composed of yellow soil∶vermiculite∶perlite volume ratio was 1∶1∶1 can significantly improve the rooting rate and seedling quality of A.mangium×A.auriculiformis hybrid cuttings.关键词
马大杂交相思/扦插苗/吲哚丁酸/萘乙酸/生根Key words
Acacia mangium×A.auriculiformis/cutting seedlings/3-indolebutyric acid/1-naphthaleneacetic acid/rooting分类
农业科技引用本文复制引用
张偌冰,李晓灵,王晨,邓夏雨,许珊珊,叶义全..基质和激素配比对马大杂交相思扦插生根的影响[J].亚热带农业研究,2025,21(4):253-260,8.基金项目
福建省林木种苗科技攻关七期项目"黑木、卷荚及马大杂交相思良种选育技术与应用"(ZMGG-0709) （ZMGG-0709）
福建农林大学科技创新项目"卷荚相思初级种子园遗传评价及二代育种亲本选择"(KFB23060A). （KFB23060A）
