The invention discloses an arbor type weigela florida thickening and
trunk strengthening method. The method comprises the steps of (1) carrying out
trunk setting
processing of weigela florida seedlings, wherein only the thickest and strongest coppice
shoot of each weigela florida
seedling is reserved, and pinching and
trunk setting are carried out on main branches; (2)
pruning the weigela florida seedlings, wherein the sprouts and branches, under 50 cm, of the base portions of main branches are all pruned away in the very year when the trunk setting is carried out on the weigela florida seedlings, pinching
processing is carried out on first level branches above 50 cm when the first level branches grow to 1.0 m,
cutting-back
processing is carried out on the first level branches growing to 1.5 m, and mentioned operation is repeated for twice or three times; in a similar way, carrying out pinching and
cutting-back processing on corresponding branches in the second year, the third year and the fourth year respectively, so that thickening and trunk strengthening operation is completed. According to the arbor type weigela florida thickening and trunk strengthening method, the lignification degree of the seedlings is improved, the height-
diameter ratio is reasonable, the
branch breaking rate of lateral branches can be reduced by more than 95 percent, the lodging rage can be reduced by more than 98 percent, the commodity cycle can be shortened by more than two years, economic effects are improved, and the method also has the advantages that operation is easy, convenient and feasible, low in cost, and the method is easy to apply and popularize.