Nutrients required for walnut trees during the fruiting period

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Hello dear, very happy for you, how to manage the walnut tree during the fruiting period. 1.Water and fertilizer management method of walnut trees in the fruiting period The fertilization of walnut trees in the fruiting period is carried out in spring and autumn, and the radial fertilization method is adopted.

Starting from the different directions of the canopy edge, dig 4 8 radial fertilization ditches in the direction of the trunk, and the location of the fertilization ditch should be changed every year and move outward with the expansion of the canopy. Generally, 50 60 kg of organic fertilizer is applied to each tree in autumn, and nitrogen, phosphorus and potassium special fertilizer is applied to each tree in spring. If the soil is dry and lacks water during the fruiting period, the fruit setting rate is low, the peel is thick, and the kernel development is not full. If you do not irrigate after fertilization, you will not be able to give full play to the fertilizer effect.

Therefore, irrigation should be carried out at the right time during flowering, rapid fruit growth, fertilization and winter drought. 2.Artificial pollination of walnut trees in the fruiting period and fruit thinning Artificial pollination is generally carried out in April and May when the male inflorescences begin to pollinate individually, collect the male inflorescences of walnuts at 8 10 o'clock in the morning on a sunny day, put the pollen in a gauze bag, hang it on the bamboo pole, and the person holds the bamboo pole in the forest while walking and shaking the pollen in the pollen bag and scatters the pollen in the pollen bag on the female flower.

It's a pleasure for Minma, I wish you a happy life.

Walnut trees want to enter the fruiting period as soon as possible, the first choice is determined by the variety of walnut trees, the growth of small trees needs to control the growth of the tree body too vigorous, combined with a variety of fruit tree management techniques, cultivate more small fruiting branches, the specific situation should also be combined with site conditions, management level, fertilizer and water conditions and other comprehensive considerations.

Walnut is a major woody oil and dried fruit tree species. Reasonable pruning is an important technical measure to improve walnut production and stabilize yield. Because pruning during the dormant period is prone to damage and weaken the tree's strength, and even cause local branch death, the suitable pruning period for walnut trees is better after the autumn fruit harvest and before the leaves fall.

Pruning of the first fruiting trees. From the beginning of fruiting to a large number of fruits, the vegetative growth of walnut is relatively vigorous, the crown is significantly expanded year by year, and the number of fruits is increasing year by year. At this time, pruning, in addition to continuing to cultivate multi-polar backbone branches, we should also pay attention to retaining auxiliary branches, and thinning out useless dense squeezing branches, long branches and weak branches; Make a variety of branches evenly distributed, the inner chamber of the crown should appropriately leave more fruiting branches, and keep it sparse and moderate to increase the fruiting area, and use the method of removing the strong and leaving the weak to adjust the growth branches of the backbone branches at all levels, so as to maintain the balanced development of the tree and cultivate a plump crown.

Pruning during the peak fruiting period. At this time, pruning is mainly to preserve the fruit and increase the yield, prolong the full fruit period, and cut off the weak branches, dry branches, overlapping branches, drooping branches, and diseased and insect branches that are dense inside and outside the crown as much as possible, improve ventilation and light conditions, promote the growth of strong fruiting mother branches and developing branches, and properly retain the robust branches extracted from the inner chamber to facilitate the fruiting of the inner membrane. For overly dense branches, they should be thinned year by year, and the wound should be flattened when cutting to promote good healing.

Pruning of senescent trees. When the growth of walnut trees declines, they should be re-pruned and renewed to restore the tree's strength and prolong the fruiting years. Focus on the retraction pruning of the coke-out perennial branches, and select a secondary branch at the retraction to promote wound healing and hidden bud germination, so as to make it a strong new branch and rejuvenate the tree.

For old trees that are too weak, the perennial backbone branches can be renewed year by year, and the strong long branches of hidden buds can be used to re-form the crown and make the tree grow vigorously. At the same time, pruning is combined with fertilization, watering, pest control and other management, the effect is better.

Walnut seedlings are planted with walnut live seeding, generally in the current year, and it takes two years to graft seedlings.

Early-fruiting varieties generally bear fruit in one to three years, such as Yunxin series (such as Yunxin No. 14), Xinjiang walnut (Xinjiang No. 1 and No. 2), Yangjiang No. 1; three to five years of fruit, such as Yangbi pickled walnuts; There are also late-fruiting walnuts that bear fruit in 5 to 8 years, and then there are late-fruiting walnuts that bear fruit after 8 years, such as American pecans. In general, different varieties have different fruit-bearing cycles, and different climate management methods will also affect the fruit-bearing time.

The reason why your tree doesn't grow is likely to be due to an unsuitable external environment, such as temperature or soil composition.

(1) Phenological period In the Yangtze River Basin, the flower bud expansion period is in early to mid-March, the full flowering period is from late March to early April, the flowering period is 57 days, the fruit is ripe in mid to late July, and the growth period is 100 110 days.

2) Growth and fruiting habit Young trees grow strongly, and the new shoots are branched many times, such as with 23 toppings, a stable and high-yield tree structure can be formed in the same year. After entering a large number of fruits, the tree tends to be modest, the growth is stable, the new shoots are stout, the germination rate is high, the branching force is strong, and the compound flower buds are the majority. The first fruiting young trees were mainly long and medium-fruiting trees, and the fruiting period was dominated by medium- and short-fruiting trees, accounting for more than 76% of the total number of fruiting trees.

The fruit setting rate of natural pollination is high, and the fruit should be thinned strictly to increase the number of fruits.

Walnut trees can generally bear fruit in 2 to 3 years, but it is necessary to manage the tree well, prune useless, flowerless branches, retain appropriate vegetative branches, and maintain a good tree shape, so as to maintain a good yield.

Growth habits. Walnut trees like light, like warm and cool climate, more resistant to dry and cold, not resistant to warmth, like deep, fertile, suitable for full sunshine, good drainage, moist and fertile slightly acidic to weakly alkaline loam or clay loam, weak drought resistance, not tolerant to salinity; Deep-rooted, strong wind resistance, not resistant to transplantation, fleshy roots, not resistant to flooding.

The early and late fruiting of walnuts is also related to the variety and cultivation technology, early walnuts and grafted walnuts can bear fruit in 2-3 years, and late walnuts and raw walnuts take 8-10 years to bear fruit10.What are the pruning tasks of walnut trees during the peak fruiting period?

Walnuts are generally about 20 years old and enter the full fruiting period, and if the cultivation conditions are good, they can be maintained for about 40 yearsAfter walnut planting, it can enter the first fruit stage after 2-3 years or 5-6 years, or even 8-10 years. At this time, the skeleton of the tree is basically formed, but it is not yet complete.

Vegetative growth is still vigorous, the branches are thick, the buds are full, the branching force is strong, the crown is rapidly expanding, the fruiting area has increased significantly, and the yield has increased year by year. The main task of pruning is to continue to cultivate the main and side branches according to the requirements of the tree shape, so that the skeleton is firm and the growth is balanced; It is also necessary to equip the results core group in a planned manner.

Walnuts in the early fruiting stage should be tightly controlled on the back branches so as not to disturb the tree shape. Under the premise of not affecting the growth of backbone branches, as much as possible should be left to supplement the space and increase the early yield. The pruning method of auxiliary branches is to leave the weak behind, or to put first and then shrink, and to combine the reduction and contraction to make it as much fruit as possible, so that the growth of the long branches on the tree at the early fruit stage is particularly strong, which is easy to disturb the tree shape, and is not easy to cultivate into a fruiting branch group, which should be thinned when pruning.

For non-backbone general branches, the strong ones are thinned; The weak ones are retained to increase the vegetative area, and then gradually removed after the tree has eased. Combined with the pruning of auxiliary maintenance techniques, it is necessary to equip fruiting branch groups in a planned manner, with a large fruiting branch group of 80-100 cm for large trees, a medium-sized fruiting branch group for about 60 cm, and a small fruiting branch group for about 40 cm.