多效唑·矮壮素对红叶地肤矮化效果研究  

The Dwarfing Effect of Paclobutrazol and Chlormequat on Kochia scoparia

作　　者：彭玉辅 陈华玲 王国行 彭火辉 石旭平 杨雪珍 彭勇 欧阳雪灵 PENG Yu-fu;CHEN Hua-ling;WANG Guo-hang(Jiangxi Institute of Economic Crops,Nanchang,Jiangxi 330202)

机构地区：[1]江西省经济作物研究所,江西南昌330202

出　　处：《安徽农业科学》2024年第11期93-96,共4页Journal of Anhui Agricultural Sciences

基　　金：江西省现代农业产业技术体系建设专项资金资助(JXARS-17,JXARS-15)。

摘　　要：[目的]探究多效唑和矮壮素对红叶地肤的矮化效应,培育矮化冠幅饱满观赏型红叶地肤,为提高红叶地肤观赏效果提供参考。[方法]以2个红叶地肤品种为材料,采用不同浓度植物生长延缓剂、不同的质量浓度进行矮化处理,测定不同处理株高、冠幅和主茎粗度生长指标。[结果]2种延缓剂和不同的质量浓度对苗高生长和冠幅生长的影响存在显著差异。从矮化效果来看,多效唑处理中,1000 mg/L对红叶地肤苗高矮化、冠幅和主茎粗度降低效果最好,2000 mg/L次之;矮壮素处理以4000 mg/L对红叶地肤苗高矮化和冠幅降低效果最好,8000 mg/L处理次之。从观赏效果来看,500 mg/L多效唑处理对红羽毛矮化观赏效果最佳,8000 mg/L矮壮素处理次之;2000 mg/L矮壮素处理对早生红火焰矮化观赏效果最佳,2000 mg/L多效唑处理次之。[结论]多效唑和矮壮素均可有效抑制红叶地肤的苗高生长和冠幅生长,提高其整体观赏效果。[Objective]This study explored the dwarfing effect of paclobutrazol and chlormequat on Kochia scoparia in order to provide reference for the ornamental value of Kochia scoparia.[Method]Two varieties of Kochia scoparia were used as materials,different plant growth retarders and different concentrations were used to treat Kochia scoparia.The growth indexes of plant height,crown width and main stem diameter under different treatments were determined.[Result]The results showed that there was significant difference between the effect of two kinds of retarders by different concentrations in seedling height and crown width.Paclobutrazol treatment with 1000 mg/L had the best dwarfing effect on high growth,crown width and main stem diameter,followed by 2000 mg/L.Under chlormequat treatment,4000 mg/L had the best dwarfing effect on high growth and crown width,followed by 8000 mg/L.In terms of ornamental effect,500 mg/L paclobutrazol had the best ornamental effect on Kochia scoparia‘Red feather’,followed by 8000 mg/L chlormequat.2000 mg/L chlormequat had the best ornamental effect on Kochia scoparia‘Early Red Flame’,followed by 2000 mg/L paclobutrazol.[Conclusion]The growth of seedling height and crown width of Kochia scoparia could be effectively inhibited by paclobutrazol and chlormequat,and the overall ornamental effect could be improved.

关 键 词：地肤 多效唑 矮壮素 矮化 

分 类 号：S482.892[农业科学—农药学]