Abstract

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Author(s):: HUANG Peng; (Henan Forest-science Institute,Zhengzhou,Henan 450008)

Abstract:: Using the semi-woody twigs of Forsythia suspensa as cuttings,different cutting time (mid-June,mid-July,mid-August,mid-September in 2017),different branch cuttings (base,middle,tip),different concentrations (100,300,500,700,900,1 100 mg·kg-1) rooting hormone treatment,different cutting substrates (clay,sandy loam,perlite+vermiculite) and different spray times (3,5,7,9,11 times) all-light spray cutting seedling test.The results showed that in the middle of July 2017,the cuttings were carried out,and the middle or the tip of the semi-lignified branches of the same year was cut for cutting.Before the cutting,the roots of the branches were soaked with ABT-6 rooting powder with concentration of 300-500 mg·kg-1 for 0.5 hour,the sandy loam soil was used as the cutting substrate,and the spraying was carried out 7-9 times a day,which could shorten the formation time of forsythia callus and significantly increase the number of roots and rooting rate.