The autumn climate is suitable, and the survival rate can reach more than 90%, which is obviously better than the spring connection.
Grafting time from late September to mid-October, that is, before and after the equinox to cold dew, the best grafting in sunny days.
Choose the spruce year-old robust shoots on the mother tree of the fine varieties of chestnuts selected by scion, cut the leaves with scissors and leave a petiole 0.7 cm long. Do not tear off leaves directly by hand, otherwise it will affect survival. The top unwooded tips should be discarded. Each scion should have 2 buds and internodes, about 8 cm long.
Cut and scion a total of 4 knives, each knife should be cut into one. First knife: On the other side of the lower bud of the scion, cut the base of the scion with a 45 degree bevel. The second knife: cut "long noodles", turn the scion, cut a knife to the base, cut the lower end of the bud, the depth slightly into the xylem, cut a little green, a length of 3 cm. The third knife: cut "short noodles", turn the scion, and cut a knife 0.5 centimeters shorter than the "long noodles", and cut noodles 2.5 centimeters long. Fourth knife: Turn the scion upside down, 0.5 cm above the top bud.
Cutting roots of wild chestnut seedlings or seedlings cultivated on the rootstock can be used as root stocks. About 10 centimeters from the ground, the bud was selected and the incision was cut 3.5 centimeters vertically at the lower end with a xylem, which was 0.5 centimeters longer than the scion "long noodles" so that the two coincided when they were connected.
Insert the scion and insert the “long noodles†scion into the rootstock interface first. Note that one side must be aligned with the forming layer, and then the phloem incised by the rootstock should be wrapped around the “short cut surface†of the scion, so that they can closely contact each other. Then, the 2 cm wide film strips were used to secure the grafting interface, and 15 cm square film pieces were rolled into small pockets to cover the scion and graft interface.
After the first inspection, it is checked in time, and the non-viable ones are patched in the spring. The second is cutting the anvil in time, sprouting in the late March, scioning off the rootstock in time, and often erasing sprouts on the rootstock. The third is to pick up the hearts frequently. Generally, the shoots grow up to 30 centimeters and pick up their hearts. Their branches grow to 30 centimeters and pick up their hearts, and they are gradually cultivated into naturally happy trees with 3 to 4 main branches.
Suture Needle,Chromic Catgut Suture,Chromic Suture,Medical Disposable Suture
Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com