Grafting time and method of persimmon trees, common maintenance skills

The square buds of 1.8-2.5 cm in length and 1-1.2 cm in width were cut on the scion of persimmon in summer, the cortex of the rootstock was cut horizontally according to the length of the buds, the cortex was opened vertically on the right side, and the buds on the scion were removed to align with each other on the right side; then the cortex of the rootstock was cut off on the left side of the buds; finally, the grafted buds were wrapped in the cortex of the rootstock and bound. In the full flowering stage, young fruit stage and rapid fruit expansion stage, Zhuangguotiling should be sprayed once respectively.

I. time and method of persimmon grafting

1. Square budding method

The main results are as follows: (1) Square buds with length of 1.8-2.5cm and width of 1-1.2cm can be cut on the scion of persimmon in summer, and the cortex of rootstock is generally cut according to the length of buds.

(2) then cut a knife on the right to open the cortex, remove the scion and install the buds, so that the right incisions are aligned with each other, cut off a piece of the cortex of the rootstock on the left side of the grafting, and finally wrap and bind the buds with the left cortex of the rootstock.

2. Bark grafting method

The main results are as follows: (1) the rootstock can be cut at the left and right side of the 10cm, then the cortex on the first side of the cross section can be cut vertically, and the lower end of the scion with 2-3 buds can be cut into a slope with a length of 2.5-3cm.

(2) cut the short slope with the length of 0.6cm on the reverse side, insert the long cutting of the scion facing the xylem of the rootstock into the cortex of the rootstock, and finally bind it with plastic strips to keep it moist.

2. Conservation skills of persimmon trees

1. Girdling at flowering stage

The main results are as follows: (1) during the flower bud differentiation of persimmon, that is, during the period of girdling, a blunt knife can be used to cut a cut about 1-2mm wide and deep up to the xylem where the tender bark of the trunk is smooth.

(2) then dip the prepared Huawang No. 2 cream with a brush to smear the wound to make the agent fully enter the gap of the cut, generally at an interval of 20-30 days, and use it for the second time in another position in the same way, which is beneficial to improve the commodity rate of persimmon.

2. Reasonable summer scissors

The main results are as follows: (1) in the process of persimmon growth, dense branches, invalid branches, more branches on the windward side and small branches on the leeward side can be thinned, which is helpful to promote ventilation and light transmission between plants.

(2) the wound caused by general pruning needs to be smeared with callus anticorrosive film in time, which is beneficial to protect the growth of healing tissue, avoid the infection of rot bacteria, and prevent soil, Rain Water pollution, freezing and dry crack of the wound.

3. Thinning buds

The main results are as follows: (1) when 2-4 fruiting branches are produced on the fruiting mother branch of persimmon tree, the three buds in the middle of the first two fruiting mother branches need to be retained, and then all the buds on the other fruiting branches should be removed and reserved as reserve branches.

(2) if the fruiting mother branch produces more than 5 fruiting branches, it is necessary to retain the first three fruiting branches, keep three flowers in the middle on each fruiting mother branch, and then remove all the rest.

4. Ecological regulation.

It can be chosen to spray Zhuangguotiling once in full flowering stage, young fruit stage and rapid fruit expansion stage, which can effectively improve the nutritional status of flowers and fruits, increase fruit setting rate and reduce flower and fruit drop.