Is Black Brin a plum? What is its planting technology?

Black plum is a kind of plum, which can be planted in hills, slopes, terraces and flat land, with 74-110 trees per mu and proper amount of organic fertilizer, then pollinated trees are planted according to the proportion of 8:1. Appropriate amount of human feces and urine, urea, potassium dihydrogen phosphate and borax can be applied during the growth period, and the overdense branches should be pruned in summer and winter, which is helpful to promote the flowering and fruiting of fruit trees.

Is Black Brin a plum?

1. Black Brin is a plum, whose name comes from the free translation of "black plum", that is, black plum. Plum is generally transliterated as "Brin" in the Chinese language of Hong Kong and Taiwan in China and Southeast Asia, so the fruit is translated as black plum.

However, there are also places translated as black brown, or black plum, black rose plum, etc., due to the introduction from the United States, the color of the fruit is purple-black, also known as American black plum, American plum.

3. The pericarp of Hei Brin is purplish black, the pulp is yellow, succulent and sweet, the sugar content is more than 13 °, the quality is better, the edible rate is more than 95%, and the fruit generally ripens from the beginning of June to the middle and late June.

II. Planting techniques of Black Brin

1. Establish a new park

Generally in the hills, slopes, terraces, flat land can be planted, you can choose high-lying, dry, non-stagnant place to plant, flat land planting should be made into deep trenches and high beds, not with pear trees.

2. Planting density

It can be planted after defoliation or in the first and middle of March. According to the row spacing of 2 m × 3 m or 3 m × 3 m, 74-110 plants can be planted per mu, and then sufficient organic fertilizer can be applied in the planting hole. Pollination trees should be planted according to the proportion of 8:1 when planting.

3. Fertilizer and water management

The main results are as follows: (1) during the growth period, it is suitable to apply thin fertilizer frequently, mainly to irrigate rare manure and urine, and can be combined with watering to resist drought. Urea 0.5kg can be added to every 100kg water.

(2) it is necessary to apply sufficient base fertilizer after harvest, and the amount of base fertilizer should account for about 60% of the total amount of fertilizer applied in the whole year, and green manure can be interplanted between rows, which is beneficial to improve the soil environment.

4. Pruning method

(1) the growth of American black plum is relatively exuberant and the tree is upright. In winter, pruning is generally based on the principle of light pruning and opening angle, and can not be repeatedly cut and hit at random. In addition to the short truncation of backbone branches and extended branches, dense branches are usually thinned and gently trimmed slowly. The method of pulling branches can be used to increase the angle, high branches require 45-50 degrees, while lateral branches and branches require 60-70 degrees.

(2) in the process of growth, pruning should be carried out in summer. generally, the method of coring can be used to restrain the apical dominance, and then promote two branches, which is beneficial to increase the leaf clusters and bouquet-like fruiting branches, and promote the formation of flowers. at the same time, it is also necessary to remove the strong branches and competitive branches on the back. if you want to make use of them, you can choose to cut them twice in May-June, and ring-peel or ring-cut the trees with vigorous growth, which is helpful to promote flowering and fruiting.

5. Protect flowers and fruits

When the flower of the fruit tree reaches 1 / 3, potassium dihydrogen phosphate, borax and urea can be used to spray outside the root after mixing with 600 times of the liquid, and then wait for 7 days and then spray again.