2. The length is about 3 to 4 cm, and the depth should reach the xylem without damaging the wood. Scions take 1 ~ 2-year-old branches with full buds.
3. Cut the knife from top to bottom at the lower end of the branch, and the size of the cut surface is basically the same as that of the rootstock, leaving 2 ~ 3 buds to cut off.
4. Immediately after the scion is cut, stick the section on the section of the rootstock, and the cambium of the scion should be aligned with the cambium of the rootstock.
5. Fix it with plastic tape and put on a small plastic bag to keep it moist. 20 ~ 40 days after grafting, scions germinate one after another. When the new buds grow to 2 ~ 3cm, the top of bagging should be removed in time.
6. Only in this way can the new buds grow normally. When the buds of the scion grow until the unfolded leaves turn green, the bagging is removed.
7. After the first to second buds on the scion are mature and the second bud has been pulled out, remove the binding band to promote the normal growth of the grafted seedlings.
Extended data:
method of grafting
1, docking mode
Lean the rootstock against the rootstock, select smooth branches with similar thickness on both sides, cut off branches with thickness of 1/3- 1/2, cut off the surface with a length of 3-5cm, align the cuts on both sides, and tie them tightly with plastic film strips. After the interface between them healed and survived, the branches of the rootstock were cut off at the interface, and the upper part of the rootstock was cut off to form a tree.
2. Split method
Removing the growing point and the heart leaf from the rootstock, and vertically cutting a gap with the length of 8- 10 mm between the two cotyledons; Cut the scion about cm below the cotyledon with a blade, cut the two sides of the young stem into double-sided wedges with the length of 8- 10 mm, and gently insert the double-sided wedges of the scion into the interface of the quasi-rootstock, so that the two cuts are closely attached and the grafting clip is fixed.
3. Plug-in method
Firstly, the true leaves and growth points of gourd seedlings are removed with bamboo sticks, and at the same time, the bamboo sticks are inserted downward from the growth points between the cotyledons of the rootstock with a depth of 0.5-0.7 cm. Then, the watermelon seedlings are cut into a wedge shape of about 0.5 cm from the position below the cotyledons with a blade, and the watermelon seedlings are inserted while pulling out the bamboo sticks. This is the direct insertion method. Another inserting method is oblique inserting method, in which a single-sided wedge-shaped bamboo stick with the same thickness as the scion is used, the plane of the bamboo stick is obliquely inserted downward from the cotyledon base of one side of the gourd seedling to the other side, the tip of the bamboo stick is pushed to the epidermis of the young stem or pierces the epidermis, and then it is cut into oblique stubble under the cotyledon of the watermelon seedling 1cm, and the oblique stubble of the young stem of the watermelon seedling is quickly inserted downward when the bamboo stick is pulled out. After the connection, move into the shed to strengthen management.
4. Machine implementation method
Using grafting machine, small semi-automatic grafting machine is very popular in the market because of its low price.
References:
Grafting _ Baidu Encyclopedia