A, rootstock selection and cultivation

Wild Junqianzi mostly distributed in the mountain slopes, steep land and weir side, and other miscellaneous trees, weeds **** exist, therefore, in the grafting of the first 1 year, select the distribution of the wild Junqianzi in the slope is not big, good light, soil layer deeper plots of the wild Junqianzi as a grafting object. For the horizontal distribution of rows, can be selected according to the 3mx4m spacing, and repair into a horizontal terraces; for the distribution of not rows, can be in each tree under the whole into a larger disk, deep plowing and loosening of the soil 20cm. will be selected to stay outside of the junqianzi weed trees, weeds and excess junqianzi all removed.

You can also use the seedling of Jun Qian Zi as rootstock after cultivation.

Two, scion collection and processing

Before budding, from the local fine varieties of small calyx persimmon tree collection of peripheral growth of strong, full bud eye, no pests and diseases of the 1 year-old branches for scion, will be cut into 8-10cm small section of the wax sealing and sand, in order to prepare for grafting use.

Three, grafting time

Through several years of grafting practice, we observed that, in my place, persimmon grafting time to late March to late April is appropriate, the best time for mid-April. At this time, the rootstock buds have sprouted and expanded but not show leaves, grafting survival rate is the highest, up to 98.7%, and too early and too late grafting survival rate are significantly reduced.

Four, grafting and method

Persimmon tree grafting method varies according to the age of the tree. For the rootstock trunk diameter of 4cm below the tree, can be used in a low way; for the rootstock trunk diameter of 4cm above the tree, can be used in a high way. The use of low grafting, can be in the rootstock trunk from the ground 10-15cm of the smooth place grafting; the use of high grafting, on the backbone branch bark is not rough skinned, can be grafted on the part of 3-5 years old branches, interface to be in the branch on the 10-15cm smooth place, the number of grafted branches according to the The number of grafted branches is determined by the size of the tree crown, generally 5-25. The backbone of the branch bark has been coarsely skinned, can be renewed first pruning, the backbone of the branch in the branch diameter of 5-15cm sawing, section to be in the branch on the 20-60cm, in order to prevent decay, section should be coated with 843 rehabilitation agent and other protective agents. After renewal pruning, the tree sprouted a large number of branches that year, according to the growth, selected grafting branch, grafting the following spring.

The grafting method uses split grafting. In the grafting should pay attention to: 1, scion cut length can not be too short, should be 3-4cm, the requirements of the outer thick, thin, thick and thin, smooth cut;

2, rootstock section to cut flat, split must be flush;

3, insert scion, rootstock formation layer to be aligned;

4, tying, to be strict, tight, dense;

5, the action to be taken to the next spring, the next spring, the next spring, the next spring, the next spring, the next spring. p>5, grafting action should be fast.

Five, post-grafting management

Grafting should be promptly erased on the rootstock sprouting shoots, generally 5-7 days 1 time, until the buds grow vigorously, the rootstock no longer occurs until the sprouting. When the new tip grows to more than 30cm, lifting the tie, and the new tip will be gathered in the pillar, in order to prevent wind folding. For the damage to the buds of the persimmon tip hawk moth, moths, turtles and other pests, you can spray 2000 times the dichlorvos liquid spray. When the new growth to 60-80cm, in the branch length 1 / 3 or 1/4 of the half-wooden, in order to keep hair branching; branch length to 30-40cm and then centering, in order to promote the tree very early forming.

After the change of grafting, the tree shape is a natural round head shape, with 3-4 main branches. Winter pruning, the backbone branches at all levels of moderate short cuts, sparing too dense branches, upright branches, other branches are slow release, so that the tree can quickly expand the crown, but also early yield.

Other management, such as loosening the soil, weeding, fertilizer, the whole tree disk, etc. are in accordance with the routine.