The purpose of pruning the guava young tree is to cultivate the guava into a shrub-shaped tree that is short, bushy, and multi-branched to facilitate the early formation of the canopy. It can not only increase the output of the previous period, but also facilitate the field operations such as fruit bagging. For the two years of planting young guava trees for planting, the branchlets obliquely planted near the ground and the overlapping branches, cross branches and diseased shoots in the middle of the tree should be cut off during the growth period, and the more upright growing branches should be frequently carried out. Pick up the heart, promote its long branches, and dwarf the guava tree.

The young tree of guava is dominated by plastic surgery, and the canopy skeleton with uniform distribution, moderate branching, and strong load is cultivated. The effective branch shoots are saved as much as possible, and the canopy tree crown is formed as soon as possible. After the result, the dense branches and the weak branches are only thinly cut.

In order to make early guava fruit, early yield and improve wind resistance, and facilitate management of the crown, we must cultivate round-headed crowns with multiple main stems, dwarf trees, and effective shoots. The specific method is: after planting, the seedling height is cut 50 to 60 cm, and the new shoot is promoted. The 3 to 4 oblique branches which are distributed evenly and with good branching angle (about 45) are used as the main branch (the seedling reaches a height It can also be cut first when planting). When the main branch grows to 30-40 cm in length, the main branch should be short and the branching should be promoted, leaving 2 to 3 branches for the deputy main branch. Then, the resulting branches were cultured on the main branch and the sub main branch.

For orchards that target early yield, dwarf and dense planting, guava sapling management must use short-stem and multi-branch plastic pruning techniques. For the first round of new shoots that are drawn after drying, the buds should be removed timely and the flowering results should not be allowed to concentrate the nutrients so that the new shoots grow stoutly. When the new shoot grows to 10 cm, the sparsely strong leaves and retains 3 to 4 branches with reasonable distribution. When the branch shoots grow to 35 centimeters in length, they are restrained and weakened. At the same time, the branches are fixed on the guard rods erected when planting by using plastic ropes, and the azimuth and angle of shoot growth are adjusted to make the distribution uniform and reasonable. For branches with small angles between the trunk and strong growth, measures should be taken to ft branches or branches and pull branches to gradually open the main branch angle. For branches with large angles and weak growth, measures should be taken to suspend the top of the branches so that the angle of branching can be maintained at about 45 degrees. When the shoots grow to 50 cm long, they are short at 40 cm. After another 1 month or so, each shoot shoots 3 to 4 new shoots. In this way, after 6 to 10 months, the number of shoots per plant can reach 20 to 30. As long as the fertilizer is sufficient, young guava trees can grow all year round and can be pruned. Within 1 to 2 years after the planting of guava seedlings, the orchard has a large space and it is generally not appropriate to take dredging measures in order to facilitate the expansion of the canopy, increase production, and increase income. From the third year onwards, the pruning was mainly based on the result of the cultivation of branches and branches, and the branches and shoots, leggy branches, dense branches, and slender branches were removed at the same time to make the shoots stout and substantial. For densely planted orchards, the total amount of the last shoot of the single plant should be controlled to be under 200, and the height of the canopy should be strictly controlled within the range of 1.8 to 2.0 meters, and the branches between the rows and between the plants should not be crossed to facilitate field operations.

First, dry

The year of guava planting will be the result. The first and second years after planting guava seedlings belong to the sapling stage. After guava planting, the top tip was cut 15 to 20 cm above the main grafting interface, and 4 to 6 branches with different heights and directions were induced. As the first-level branch, the remaining branch was wiped off.

Second, raise the crown

The guava saplings mainly use toppings and buds to cultivate crowns. When the first branch is 20 centimeters long, it picks up the heart and triggers 2 to 4 second-stage branches, eradicating the remaining buds. When the second-stage branch grows to 20 centimeters, it again picks up the heart, triggers 2 to 4 third-degree branches, erases the rest of the buds, and removes the buds on the first and second branches. On the third branch, leaves can be set or left. For branches without flower buds, pick up the heart when it is up to 20 centimeters; with the buds above, cut (pick) the heart at the 3 leaves above the bud. The topping of the branches after the third branch is the same as that of the third branch. When the fourth-grade branches germinate, the tree has formed a happy round head-shaped crown. The tree can reach 80 cm and the crown can reach up to 100 cm. Cultivating the first and second branches at the tip length of not more than 20 centimeters when picking the heart is conducive to the early formation of the crown, but should pay attention to strengthen the supply of fertilizer and water. After the canopy is formed, depending on the growth of the plant, the overlying branches, cross branches, and pendulous branches (the fruit is drooping to the ground when the fruit is on the ground) are cut off, and the erect leggy branches with short growth tend to be overwhelming. After a short cut, the top buds are wiped off when the apical buds are pumped to promote the sprouting of the lateral branches so that they always maintain a happy round-headed canopy.

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