关键词：
切花向日葵;经济性状;植物生长延缓剂;多效唑;矮壮素;缩节胺
摘 要：
为了探究不同植物生长延缓剂对切花向日葵主要经济性状的影响,以文森特切花向日葵为试验材料,使用不同质量浓度的多效唑(40、80、160、240 mg/L)、矮壮素(100、200、400、800 mg/L)和缩节胺(50、100、150、200 mg/L)溶液对其进行叶面喷施处理,以清水作为对照,在达到采收成熟度后,对不同处理条件下切花向日葵茎、叶、花性状进行测定.结果表明,与对照相比,12个处理下的切花向日葵均表现出株高降低、茎粗增加、节间缩短、茎干比增大、叶柄缩短、叶片增厚以及叶绿素含量增加、花盘直径增大等特点,表明文森特切花向日葵的经济性状得到明显改善,切花品质显著提升.其中,240 mg/L多效唑、800 mg/L矮壮素和150 mg/L缩节胺处理对切花向日葵经济性状的影响最为显著,240 mg/L多效唑处理下,切花向日葵株高降低24.1%,茎粗增加41.6%,叶片厚度增加52%,SPAD值增加47.5%,花盘直径增大26.3%;800 mg/L矮壮素处理下,其株高降低15.8%,茎粗增加35.7%,叶片厚度增加59.9%,SPAD值增加48%,花盘直径增大24.8%;150 mg/L缩节胺处理下,其株高降低22.2%,茎粗增加44.5%,叶片厚度增加74.8%,SPAD值增加39.3%,花盘直径增大22.7%.综合比较分析发现,240 mg/L多效唑处理下切花向日葵的经济性状最为突出,综合效果最好.
译 名：
Effects of Plant Growth Retardants on the Main Economic Traits of Cut Sunflower
单 位：
Yangling Vocational and Technical College,Xianyang 712100,China;Xi'an International Port Zone Housing and Urban-Rural Constructioin Bureau,Xi'an 710026,China
关键词：
cut sunflower%economic traits%plant growth retardants%PP333%CCC%DPC
摘 要：
In order to explore the effects of different plant growth retardants on the main economic traits of cut sunflower,in this study,Vincent cut sunflower was used as the test material,foliar spray treatments were carried out with different concentrations of PP333(40,80,160,240 mg/L),CCC(100,200,400,800 mg/L),and DPC(50,100,150,200 mg/L)solutions with water as the control.The stem,leaf,and flower traits of cut sunflower were determined under different treatment conditions after reaching harvest maturity.The results showed that compared with the control,the 12 treatments showed the characteristics of reduced plant height,increased stem diameter,shortened internodes,increased diameter-to-height ratio,shortened petioles,thickened leaves,increased chlorophyll content,and increased flower diameter,indicating that the economic traits of Vincent cut sunflower were significantly improved and the quality of cut flowers was significantly improved.Among these treatments,PP333 240 mg/L,CCC 800 mg/L,and DPC 150 mg/L had the most significant effects on the economic traits of cut sunflower.Under 240 mg/L of PP333 treatment,the plant height of cut sunflower decreased by 24.1%,stem diameter increased by 41.6%,leaf thickness increased by 52%,SPAD value increased by 47.5%,and flower diameter increased by 26.3%.Under 800 mg/L of CCC treatment,plant height decreased by 15.8%,stem diameter increased by 35.7%,leaf thickness increased by 59.9%,SPAD value increased by 48%,and flower diameter increased by 24.8%.Under 150 mg/L of DPC treatment,the plant height decreased by 22.2%,the stem diameter increased by 44.5%,the leaf thickness increased by 74.8%,the SPAD value increased by 39.3%,and the flower diameter increased by 22.7%.Comprehensive comparative analysis showed that the economic traits of cut sunflower under 240 mg/L of PP333 treatment were the most prominent,and the comprehensive effect was the best.
