Plum trees bloom. Shu-you Li has alternate leaves, the leaves are oval or oblong-lanceolate, 4.5-6 cm long and 2-4 cm wide, the apex is short and sharp, the base is wedge-shaped, the edge is tapered and serrated, the pinnate veins are 5-8 pairs, the two sides are hairless or the posterior veins are hairy, the color is dark green or purple, and the petiole is smooth and glandular. Flowers are solitary or clustered in two, white, with about 25 stamens, slightly shorter than petals, hairless flowers, flat drupe with a diameter of 65,438+0-3 cm, slightly ribbed ventral suture, no peduncle, yellow, red or purple when mature, bright or slightly covered with powder, flowers and leaves are the same, and fruits often fall in early March and April.
Pruning plums mainly bear short fruit branches and bouquets of short fruit branches, so pruning is based on the principle of light cutting and long release, ventilation and light transmission. In the first year, fruit tree shaping was the main task, and the amount of pruning was appropriately increased to lay the foundation for high yield in successive years. Perennial trees basically take measures such as thinning, shrinking and pulling branches to alleviate tree vigor and control vegetative growth. The pruning period is mainly in summer and autumn, with emphasis on thinning out over-dense branches, flourishing branches on the back and competing for branches, timely pinching, holding branches and twisting tips, strengthening ventilation and light transmission, and promoting flower bud differentiation.
1. Young tree period? Young trees grow vigorously and easily form thick branches. The main task of pruning is to reshape and expand the crown, not only to cultivate a good tree structure, but also to consider the early yield. Therefore, pruning should be light rather than heavy, and in summer, bud thinning and core removal are the main methods. The seedlings should be shortened by 60 ~ 80 cm, and the branches that have been smoked should be reserved purposefully. When the branches grow to 80 cm, the temporary branches should be cored at 60 cm to promote short branches and middle branches to form fruiting branches.
Plum variety 1. Angono: Native to the United States. This variety is the latest variety of American brown series. The fruit is big, the average single fruit weight is 1.20g, and the maximum is 250g ... The fruit is purple-black, the meat is dark red, the taste is sweet, the sugar content is 15%, the meat is hard, it can be stored and transported, and it will mature in late September. Cold storage can last until May of the following year 1. This variety is the most storage-resistant late-maturing variety at present.
2. Australian plum 13: the fruit is oblate and large, with an average fruit weight of 90g and the maximum fruit weight of 150g. The fruit is deep purple, the flesh is purplish red, the flesh is crisp, hard and dense, soft and juicy after maturity, fragrant and moderately sweet and sour. Mature in late July.
The nutritional value of plums Many people have an unspeakable fear of plum trees, because the phrase "Bury a dead person under the plum tree" loves and fears the fruit of plums, and they want to eat it but dare not eat it. In our life, there is usually a lot of geomantic omen to cultivate plum trees. The word plum is broken down into Muzi, also known as Eighteen Zi, which means that plum bears many fruits on the tree, which means that many children are blessed. So I often praise my teacher with peaches and plums. As far as nutritional components are concerned, the nutritional value of plums is not high, but the medicinal value of plums is high. Plums are good for the liver, and Chinese medicine often uses plums to treat liver diseases. Stomach heat has no appetite. Eating some plums or drinking a glass of plum juice can clear stomach heat, stimulate appetite and increase appetite.