不同扦插时期和生长激素对石榴硬枝扦插繁殖的影响  

Effects of different cutting periods and growth hormones on the propagation of Punica granatum hardwood cuttings

作　　者：李东辉 刘国华[2] LI Donghui;LIU Guohua(Jurong Secondary Specialized School,Jurong 212400,China;National Color-Leaf Tree Species Breeding Base,Jiangsu Vocational College of Agriculture and Forestry,Jurong 212400,China)

机构地区：[1]江苏省句容中等专业学校,江苏句容212400 [2]江苏农林职业技术学院国家彩叶树种良种基地,江苏句容212400

出　　处：《安徽农学通报》2025年第8期29-32,共4页Anhui Agricultural Science Bulletin

摘　　要：为提高石榴扦插成活率和插穗生长质量,本试验以向阳面生长的3~5年生石榴硬枝作为插穗,分别于3个不同扦插时期[A_(1)(2月19日)、A_(2)(3月15日)、A_(3)(4月4日)],对石榴硬枝施用2种生长激素[强力生根剂(浓度分别为2.5、4.0和10.0 g/L)、萘乙酸(NAA,浓度分别为50、200 mg/L)],测定插条新梢数量、长度,插穗生根数量、长度及扦插成活率等。结果表明,生长激素处理对石榴新梢数量、长度,插穗生根数量、长度及扦插成活率有明显影响,A_(2)时期施用200 mg/L NAA处理5 min的插穗新梢数量和长度表现较好;A_(2)时期施用50 mg/L NAA浸泡12 h有利于增加插穗生根数量和长度;A_(3)时期施用50 mg/L NAA浸泡12 h在促进插穗成活率方面具有明显优势。综上,施用50 mg/L NAA处理12 h有利于增加石榴插穗生根数量,提高生根长度以及插穗成活率,以3月15日和4月4日的扦插效果较好。本文为石榴硬枝扦插繁殖的推广应用提供参考。To improve the survival rate and the growth quality of Punica granatum cuttings,the rough branches of robust Punica granatum plants growing 3 to 5 years old on the sunny side were used as cuttings,at three different cutting periods[A1(February 19th),A2(March 15th),A3(April 4th)],two kinds of growth hormones[strong rooting agent(concentrations of 2.5,4.0 and 10.0 g/L respectively,naphthalene) acetic acid(NAA,concentrations of 50 and 200 mg/L respectively)]were applied to the hard branches of pomegranates.The number and length of new shoots of the cuttings,the number and length of roots of the cuttings,and the survival rate of the cuttings were measured.The results showed that growth hormone treatment had significant effects on the number and length of new shoots,the number and length of roots of cuttings and the survival rate of cuttings.In A2 period,the number and length of new cuttings treated with 200 mg/L NAA for 5 min showed good performance.In A2 period,the cuttings soaked with 50 mg/L NAA for 12 h could increase the number and length of roots.In A3 period,50 mg/L NAA soaked cuttings for 12 h had obvious advantages in promoting the survival rate of cuttings.In conclusion,the application of 50 mg/L NAA soaking for 12 h was beneficial to increase the number of roots,root length and survival rate of Punica granatum cuttings,and the cuttings on March 15th and April 4th had better results.This paper provides a theoretical basis for the popularization and application of hard branch cutting propagation of Punica granatum.

关 键 词：石榴 扦插 繁育 扦插成活率 

分 类 号：S665.4[农业科学—果树学]