Walnut tree does not hang fruit expert prescription
"You see! My walnut tree has been growing for more than ten years. It is not fruit. I want to chop it off. I feel so sorry that I don't know if there is any way to make it fruit." March 7, Nanjiang County Luo Mengchang, a farmer from Wushanmiao Village in Gaoqiao Township, pointed to several walnut trees behind his room. In response, the reporter interviewed Li Jianxin, a forestry engineer from Nanjiang County, on March 16. Expert Li said that walnut trees do not bear fruit, they can be solved through high-risk alternatives, and can produce good benefits. The main techniques for high grafting of walnut trees are as follows: Tree age selection Grafting walnut trees generally choose 5 to 15 years old, low dry, small crown, growing vigorous tree. At the same time, saplings below 30 cm in diameter and below can be replanted. If it is a weak tree, it is necessary to strengthen the management of the rejuvenation of the tree before grafting. Scissor scion Scion should be taken from the mid-segment or base segment of a fruiting tree with excellent varieties, robust growth, and no pests, with a diameter of 1 cm or more and a small and smooth pith. The ear cutting time is appropriate after falling to mid-February. Each scion retains 3 full shoots, is sealed with paraffin, 50 or 100 varieties are tied, and is immersed in wet sand or wet sawdust, and the thickness is 15 to 20 cm. It is stored at a temperature of about 10 degrees Celsius. . Grafting The time for high walnut varieties to be replaced should generally be controlled when the buds are sprouting or when the leaves begin to bloom. Northern Sichuan usually can be grafted from mid-March to mid-April. Injury flow control 7 days before grafting, saw the joints according to the original tree crown affiliation. The saw head should be 20-30 cm from the base. At the same time, at the base of the trunk 20 to 30 cm from the ground, spiral drilling 2 to 3 ports, the depth of the main stem diameter of one-fifth to one-seventh, in order to facilitate the flow out of injury. If there is too much injury, one or two wound ports may be sawed at the base of the joint. Grafting techniques Plug the skin. The scion is not peeled, and the rootstock interface diameter is 3-12 cm. This method is mainly used. Plug the tongue to connect. Scion skin, the diameter of the rootstock interface 3 ~ 12 cm mainly use this method. When grafting, the rootstock is sawn again to dry layer, and then the rootstock is cut off with a long tongue. The scion cuts and grows 5-6cm tongue-type noodles, and then squeezes off the cortex and xylem of the tongue, and then the tongue part of the xylem. Insert the between the cortex and the xylem on the side of the rootstock section, and apply the lingual skin layer of the scion on the tongue-shaped noodles of the rootstock skin. Finally, tightly bind it with a plastic tie. Double tongue connection. Rootstock interface diameter of 3 cm or less. Embed the nailing method. The rootstock is too thick and the bast is too thick to be grafted by this method. Wound protection After the scion is fixed, the interface shall be moisturized. Generally, the grafting interface and the scion shall be covered with a grafting tape, a wax or a plastic bag. The plastic bag shall be 4-5 cm higher than the top of the scion and the gas shall be removed to facilitate the scion germination. Tip. Use a newspaper cover over and around the plastic bag to facilitate moisturizing and moisturizing the shade and promote wound healing. After management Exhale. After grafting, the scions begin to sprout and branch leaves are observed every 2 to 3 days. For the exhibition leaf, a small opening can be made on the top of the plastic bag to allow the tip of the tender shoot to stick out. The upper air outlet is small to large and cannot be opened at one time. It is also not possible to remove the plastic bag too soon. In addition to Meng. Timely removal of the sprouts of the rootstock, if the joint is not alive, can retain 2 to 3 germination branches in the appropriate parts, after the patch. Anti-folding. After 25 to 30 days, the scions germinate one after another and grow rapidly. When the scion is a little longer than 30 centimeters, it is necessary to set up the pillar at the interface in time, tie the new light to the pillar, and cut out the sprout on the branch at any time. The new branch needs to be tied 2-3 times longer. . Supplementary. If there is no living scion, the appropriate position should be selected. Two to three buds will be left on the anvil pile, and budding will be carried out from July to August. Loosen. After grafting for 2 to 3 months, loosen the interface binding material once, but do not remove it. After the end of August can be removed according to circumstances. prune. After the walnut trees are tall, they are easy to form plexiform branches. When pruning, they should be combined with short cuts and branches to expand the canopy as quickly as possible, and to strengthen fertilizer and water management and pest control so that they can be put into production as soon as possible. Spice Novelties Co.,Limited , https://www.wholesale-adult-toys.cn