1, single bud cutting method

① Cutting scion:

Put the prismatic side of the scion upward, the flat side of the scion downward close to the index finger, and obliquely cut forward at about 1 cm below the bud point, and the inclined plane forms a 45-degree angle. Then put the flat side of the scion up and cut the cortex forward from the vicinity of the bud point. The section is required to be smooth, just to the cambium, and the white part of xylem is slightly exposed. Then turn the scion to the side with the bud tip facing upwards. Cut it about 0.2 cm above the bud point and put it in a basin filled with clear water.

② Cutting rootstock:

When the rootstock is 6 ~ 8cm off the ground, choose a smooth side and obliquely cut off the upper part of the rootstock, and the section is 45 degrees. Then cut a knife vertically along the junction of cortex and xylem under the inclined plane, and the cut surface is better than the white xylem just seen. The length of this part depends on the length of the scion.

③ Bud burying and topdressing:

As far as possible, select a scion with the size and length similar to that of the rootstock section, insert it into the rootstock section, so that the base of the bud is close to the bottom of the rootstock section, and the rootstock is closely connected with the arc layer of the scion section. If the rootstock is thicker than the scion, it should be aimed at one side of the cambium, so it is easier to graft. Finally, wrap it with plastic film tape and seal it with wax.

2. Grapefruit planting is a traditional planting crop and an important fruit. Reasonable management techniques are helpful to improve planting efficiency, especially grafting pomelo trees can improve the quality of pomelo.

Extended data:

1. Rootstock should be the best. After grafting, it grows fast, bears fruit early, has high yield and good fruit quality. Sowing is generally carried out in the field, and a small plastic arch shed should be built to keep warm. Emerge in the same year, and germinate in the next autumn, which can be as early as 1 year. Grafting is usually carried out from early March to early April, and the autumn shoot or spring shoot scion is about15-25 cm; In August -65438+ 10, T-type bud grafting is commonly used.

2. The main diseases of grapefruit are Huanglongbing, canker, scab and anthracnose, and their control methods are the same as those of citrus, which can be used for reference. Ulcer does great harm to grapefruit. Canker disease is caused by bacteria, which mainly attacks new shoots, young leaves and young fruits, forming ulcer spots with rough surface, brown color and diameter of 0.3-0.5 cm, causing defoliation and fruit drop, affecting growth and yield, and reducing the appearance and internal quality of fruits.

References:

Baidu encyclopedia-pomelo tree