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Cultivation Techniques of Cangzhou Jujube
Luzhou jujube fruit surface is bright red, fruit a medium, crisp and refreshing, juicy sweet, with a strong cold resistance, drought resistance, anti-poor characteristics. Its excellent quality, high sugar content of 30%, early solidity, grafted the year, the second year after the girdling will be able to result. The cultivation technology of the crisp jujube in Zhangzhou is not difficult. The key is to master the grafting technology. Even if it is grafted in the barren mountain, it can thrive. Prior to grafting, the preserved jujube branches should be cut into small pieces, leaving 1 to 2 main buds in each segment. In order to reduce the evaporation of water from the scion and improve the survival rate of grafting, wax sealing is also applied to the scion. The key technique in wax sealing is to know the temperature of the wax seal and the time of waxing. Excessive temperatures can easily scal the scion and the temperature is too low. When the wax layer is too thick and easy to peel off. One trick here is to add some water to the bottom of the pan before melting the wax so that the temperature does not exceed 100°C. Grafting time is generally selected before and after sprouting of jujube seedlings. There are various methods of grafting. Prior to grafting, the anvil was flat and the height of the flat anvil was 8 to 10 cm. The lower end of the scion used for picking is to be cut into two equal length wedges. The length of the cut noodles is 2 to 3 centimeters long. It requires straightness and no frizziness. When grafting, select the smooth part of the rootstock rootstock to be flattened, cut it with the scissors at the center, and then insert the scion to align the sides and the buds should face the aligned side. Then, use a plastic strip from bottom to top to tightly fasten the joints and the base of the scion. The management of grafted seedlings is relatively simple. There is a key link in the sprouting stage of grafted seedlings, which is to remove germination in time and remove buds sprouted on the rootstocks to focus on the nutrition-promoting interface healing and the growth of scions. The number of germinations should be not less than 2 ~ 3 times. In order to prevent fruit cracking in jujube, it can be covered with weeds under the tree when the fruit ripening period has come but there is a lack of rain, which can prevent the evaporation of water, maintain the relative stability of soil moisture, and reduce cracking. It is conducive to the growth of fruit. In the cultivation and management of fragrant jujube, we must pay special attention to doing a good job in girdling. The girdling is generally carried out at the flowering stage, mainly to injure the phloem of the tree, causing temporary accumulation of nutrients on the tree, allowing more organic matter to be distributed to the flowers and fruits of the upper twigs to increase yield and quality. The girdling should be carried out on a sunny day. The Cangzhou brittle jujube was planted in the year and it can be girdled in the next year. The girdling can be dated in the same year, and the girdling depth is best achieved by cutting into the xylem. Cangzhou crisp jujube is a very drought-resistant variety. If there are irrigated conditions, it is best to pour 2 or 3 times a year. Generally, pouring water before flowering is mainly to promote the growth of new shoots, which is very favorable for the fruiting in the later period; the second time water is generally watered after flowering for a long time, which is very beneficial to the increase of the fruit; the third time is pouring. Frozen water is very safe for wintering seedlings. In addition to pouring enough water before freezing, some organic fertilizer should be applied properly.