The pruning technique of bayberry, should it be fertilized after pruning?

Red bayberry trees should carry out branch thinning, truncation, branch pulling and ring cutting in order to promote flower bud formation and improve fruit setting rate and yield. Bayberry does not need to be fertilized after pruning. The first fertilization of bayberry is from February to March before sprouting, mainly applying potassium fertilizer and nitrogen fertilizer, and each plant can increase the amount of Liheng water-soluble fertilizer by about 50g.

1. Pruning techniques of bayberry trees

1. Sparse branches: generally cut off branches or groups of branches from the base of the branches, and the auxiliary branches that grow too dense can be strong and weak; cut off the erect branches on the back of the main branches and the main branches, the strong branches at the top of the crown are too strong, or there are too many branches when the crown is shaped.

2. Truncation: a part of the branches can be cut off from the middle of the branches, which is beneficial to promote multiple new shoots, renew the fruiting mother branches, and restore the growth of the weak trees.

3. Pulling branches: pulling the branches to the horizontal direction is beneficial to open the crown, penetrate the sun and ease the tree potential, which can not only promote flower bud differentiation, but also improve the fruit rate and fruit earlier.

4. Ring cutting: during this period, a knife is used to cut rings on certain parts of the branches, reaching the depth of xylem, which is beneficial to the young and middle-aged bayberry trees that are overgrowing and not easy to form flower buds. After ring cutting, the products of photosynthesis are retained in the upper part, which is beneficial to promote the formation of flower buds and improve fruit setting rate and yield.

Second, the pruning time of bayberry trees

1. Spring pruning

The main results are as follows: (1) the pruning time in spring is from April to May, and the spring pruning can promote the local root system, wither and die uniformly due to lack of nutrition, and the sprouting time of spring shoot is later than that of flowering and fruiting, which can alleviate the contradiction between flowering and fruiting and improve the rate of fruit.

(2) Spring shearing forms most of the new fruiting short branch groups, and there is sufficient supply of carbohydrates, which promotes the full expansion of the fruit and the growth of "under-leaf bayberry" fruit.

2. Autumn pruning

The main results are as follows: (1) the time of autumn pruning is from October to November, which is beneficial to promote flower bud differentiation and healthy development of flower organs. the time of flower bud differentiation is not only long, and the time of middle-aged bayberry shoot formation in summer and autumn is from July to September. Through last year's autumn re-pruning and spring pruning, the fruiting branch group has been formed.

(2) at this time, cutting off the overgrown branches growing in the later stage is beneficial to promote the nutrition of the tree, and all of them are transferred to flower bud differentiation and flower breeding in the later few months, which can promote the formation of the mother branch group of spring shoots, generally, the earlier it is cut, the more likely it is to differentiate leaf buds around the cut, the shorter the length of the new spring shoot, and the easier it is to form flower buds in the second year, and autumn shearing is also the basis for the formation of 65% spring shoots.

Third, should it be fertilized after the bayberry tree is pruned

The main results are as follows: 1. There is no need to fertilize the bayberry tree after pruning. The first fertilization of bayberry tree is from February to March before sprouting, mainly applying potassium fertilizer and nitrogen fertilizer, each plant can increase the amount of Liheng water soluble fertilizer by 50 grams, which is beneficial to meet the spring shoot growth of bayberry tree. And the nutrient requirements of flowering and fruit growth and development.

2. In the second time, strong fruit fertilizer can be applied in the middle of May, mainly rapidly available potassium fertilizer, which can supplement the nutrient requirements of fruit growth and development in time, and help to improve fruit quality.

3. Fertilization from June to July after the third harvest is mainly applied with organic fertilizer and available nitrogen fertilizer, which is beneficial to replenish the nutrients needed by the tree in time.

4 and 3 times accounted for 30%, 30% and 40% respectively. Fertilizer applied twice a year can be applied before the first sprouting, accounting for about 40%, and the second time can be applied after fruit harvest, accounting for about 60%.