Grafting technique of Litchi

Litchi is a kind of very old fruit. In ancient times, there were many poems that people loved litchi. Nowadays, people are full of praise for its taste. Do we know how to grow such a popular fruit? Watch it with the editor!

Litchi grafting method

Joint method: when grafting, cut the rootstock 10 to 20 cm above the ground, cut the cut, choose a smooth surface and cut it to the knife from the bottom up, about 3 to 4 cm long, and the depth is appropriate to reach the xylem without harming the wood. The scion takes full and sturdy 1-to 2-year-old branches and cuts them from top to bottom, leaving 2-3 buds to cut. After cutting the scion, immediately attach the cutting surface to the cutting surface of the rootstock, align the forming layer of the scion with the forming layer of the rootstock, bind and fix it with plastic tape, and cover it with a small plastic bag to moisturize. 20 to 40 days after grafting, the scion sprouts one after another, and when the new bud grows to 2 to 3 cm, the top of the bag should be removed in time so that the new bud can grow normally. The buds of the scion grow until the leaves turn green to remove bagging. After the second shoot of the scion is mature and the second shoot has been released, the binding band is released to facilitate the normal growth of the grafted seedling.

Points for attention after grafting of Litchi

1. Ant control. After litchi grafting, the waterproof film bandaging the scion often accumulates a layer of water droplets, and the ants like to bite through the film to absorb the water droplets, which can easily cause the scion to lose water or be infected and rotted by Rain Water scouring bacteria, reducing the survival rate. After that, you can draw a circle around the tree head with a magic pen, or tie the tree head with a cloth that soaks dichlorvos pesticides to prevent ants from harming waterproof films and scions, and sprinkle lime powder around the roots, or brush lime water on the trunk 50 centimeters above the ground. Sautéed Vermicelli with Spicy Minced Pork can also be stopped.

2. Control anvil. That is, to control the growth of adventitious buds of rootstocks, most of the adventitious buds or new shoots growing under the interface should be erased in time, leaving only 1-2 tips as "pumping tips". After scion shoots, these tips can be erased.

3. Inspection and reconnection. The survival rate of scion can be checked 15-30 days after grafting. The browning or dehydration of the scion indicates that the grafting is not successful. If the survival rate is too low, it can be reconnected in time. If you can't catch up or miss the grafting, you can do it in the next grafting season.

4. Windbreak and support. When the storm comes, the branches and leaves can be cut off properly, or the joint of rootstocks and scions can be fastened with bamboo pole to prevent the grafting interface from being torn.

5. Unbind. Buds that cannot be pierced through the film should be picked in time. The plastic film tape that binds the joint or also acts as a seal will be cut and released from the side after the new tip is ripe. When the grafting is sealed with a thin film bag or plastic film tube, after the scion bud germinates, cut through the top of the bag to make the new shoots grow smoothly.

The method of protecting flowers and fruits of litchi trees

1. Fertilization before anthesis. From late February to late March, mature organic fertilizers were applied, with 50 to 75 kilograms of human and animal manure per plant, or 3 to 4 kilograms of mature cruller plus 1 to 1 kilograms of phosphate fertilizer in advance. Five kilos. From 10 to Qiao days before flowering, each plant was topdressing with 0. 5% available nitrogen fertilizer. 5 to 0. 75 kilos.

2. The extra-root topdressing of available N, P, K plus trace elements plus plant auxin and pesticides was applied at flowering and young fruit stage. In the heyday of female flowers: 0. 0. 5% to 0. 5%. 1% borax plus 0. The canopy was sprayed with 1% magnesium sulfate and 10% sugar pollen water. 3 to 5 days after the end of the female flower, that is, the young fruit and grain stage, 0. 5%. 2% potassium dihydrogen phosphate plus SPPM2. 4D or 3OPPM anticonvulsant plus SOPPM gibberellin plus 600to800fold trichlorfon solution for canopy spray. 20 days after the end of the female flower, 0. 2% potassium dihydrogen phosphate plus 0. 3% urea plus 30PP anti-falling hormone plus 30% 50PPM gibberellin was sprayed in the crown. The young fruit of litchi begins to grow aril to cover 2/3 of the seed, about 40 days after the end of female flower, with 0. 5%. 5 to 0. 8% urea plus 0. 5% urea. 3% potassium dihydrogen phosphate plus 30% gibberellin to 50PPM for canopy spray. About 20 days before fruit harvest, if there are insect pests, human pesticides should be added at the same time as topdressing outside the roots. 4% potassium dihydrogen phosphate plus 800x trichlorfon or 2000 to 3000 times enemy kill spray canopy.

Points for attention in pruning litchi trees

Litchi is a fruit tree shining with happy light. When the adult litchi orchard is closed, the canopy is closed, which affects ventilation and light transmission. Cross, overdense, shaded branches, weak branches and withered branches of diseases and insect pests should be pruned, so that the branches are evenly distributed, the upper and lower layers of the crown are ventilated and transparent, and photosynthetic efficiency is increased. Pruning is usually carried out after fruit harvest.

After reading the article recommended by the editor, have you learned how to graft litchi? Litchi is well cultivated, which can be regarded as a kind of high-yielding fruit. In the fresh market period of litchi, its sales are also very considerable, and its canned products are also very popular. This is a good start-up project!