Persimmon trees bear fruit for several years. What if persimmon trees lose fruit?

In many rural areas nowadays, almost many people have planted orange trees or persimmon trees in their homes. Because these two kinds of trees are relatively easy to grow among all the fruits, and a tree can bear a lot of fruit. So how often do persimmon trees bear fruit? If persimmon trees always fall persimmons, what measures do we have to deal with them? Next, the editor will give you some popular science about persimmon planting methods.

Persimmon trees bear fruit for several years

Generally, it begins to bear fruit 3 ~ 4 years after grafting, reaches the full fruit period after 15 years, and its economic life is as long as one hundred years. It is said that "planting in one year, income in a hundred years" is not only an important tree species to control poverty and become rich in mountain areas, but also an excellent tree species to maintain ecological balance in nature. Persimmon trees are not strict in the selection of soil quality, regardless of mountains, hills, plains, beaches, fertile land, barren land, clay, sandy soil can get considerable yield. Therefore, the development of persimmon production plays an important role in making full use of land, increasing ground coverage, improving climate and improving people's living environment. Persimmon crown opening, bright leaves clean green trees thick shadow, summer can be shaded and cool; into autumn green leaves Dan fruit, bright and pleasing to the eye, late autumn red leaves can be compared with maple leaves, is also an excellent ornamental tree.

What if the persimmon tree falls fruit?

1. Ring peeling at flowering stage

Peeling can be carried out at any time from early flowering to full flowering, and girdling is suitable for strong trees, strong branches or large fruiting branches. The width of the ring peeling caliber is 0.3 mm and 0.5 mm. After peeling, the peel is wrapped with plastic sheet to maintain the humidity of the peel and promote healing.

2. Reasonable summer scissors

Remove dense and ineffective branches during the growing period, leave more branches on the windward side and less on the leeward side, so as to promote ventilation and light transmission. After pruning persimmon trees, hidden buds will sprout in large quantities. In order to reduce nutrition consumption, useless sprouts should be erased before Lignification. Long branches with room for growth, especially overgrown branches, are coring when they are 40 cm long.

3. Thinning buds

When 2-4 fruiting branches were extracted from the fruiting mother branch, three flower buds in the middle of the first two fruiting mother branches were retained, and all the flower buds on the other fruiting branches were removed and reserved as preparatory shoots. When the fruiting mother branch produced more than 5 fruiting branches, the first three fruiting branches should be retained, with 3 flowers in the middle of each fruiting mother branch and all the others sparse.

4. Skillfully apply fertilizer and water

For big trees entering the peak fruiting period, it is necessary to strengthen fertilizer and water management, apply base fertilizer early in spring and full base fertilizer in autumn, but topdressing should not be premature. Generally, topdressing in the withered top of branches in May and fruit expansion in July can increase the fruit setting rate. Increase the number of flower buds next year and improve the quality of flower buds. Water should be watered in dry weather.

5. Chemical regulation

Spraying 500 mg / kg gibberellin plus 1% urea at full flowering stage and young fruit stage can improve the nutritional status of flowers and fruits, prevent the delamination of persimmon stalks and stalks, enhance the nutrient absorption function of flowers and young fruits, stimulate ovary expansion, and increase fruit setting rate. During the period of rapid expansion of fruit, foliar spraying 0-3%-0.5% urea solution and ammonium molybdate and other trace element fertilizer can reduce flower and fruit drop.

6. prevention and control of diseases and insect pests

During the growing period, diseased fruits and worms were removed manually. In mid-June, a spray of 500 Bordeaux solution, or 65% Dysen zinc wettable powder 500 times, or 2.5% green kungfu 1500 times solution plus 1.5% chloramphenicol 800 times solution could control persimmon anthracnose, corner spot pain and round spot disease. During the peak of larvae in mid-late May, late July to early August, 2500 times of methamphetamine EC was sprayed mainly on the fruits, stalks and buds of persimmon trees, once every 10 days for 3 times.

How to prune persimmon trees

The main results are as follows: 1. Light shearing is the main trimming in winter, which should be combined with sparse and shrink, adjust the skeleton and improve the ventilation and light transmission conditions. It is necessary to remove some over-dense branches, thin and weak branches, overlapping crossed branches, dry and withered branches of diseases and insects, and pay attention to retreating perennial weak branches to stimulate the formation of new branches. Cut short branchlets to promote secondary buds to sprout into branches.

2. In summer pruning, we should master the principle of the combination of thinning, picking, sprouting and ring cutting, that is, to remove the big branches and the new shoots whose inner chamber is too dense, weak and improperly positioned, and the branches left behind are easy to blossom and bear fruit due to the improvement of light and nutritional conditions. Before sprouting, the annual strong branches are carved into buds, medium and short branches are promoted, and the new shoots and other branches from the sprouts are coring at 30ml and 40cm. After the weak branches are coring, the top is easy to form flower buds, and after the strong branches are coring, the secondary branches can form flower buds in the same year and bear fruit the next year. In order to improve the fruit setting rate, the large auxiliary branches should be cut around at the flowering stage.

3. In autumn, the best time to pull branches in a year is September, but in the summer season from May to June, the upright branches can be pulled at any time, and the vigorous shoots can be taken. The main objects of drawing branches in September are the main branches and auxiliary branches. The opening angle of the basic main branches should be about 90 °, less than 70 °downward, more than 70 °upward, and inappropriate azimuth to the left or right. Note that this kind of big branch is not hard to pull, it is easy to split, the correct way is to saw 3 times behind, then pedal the base with your feet, pull both hands down slowly, and finally fix it, leveling all the upper main branches and side branches.

Grafting methods of Persimmon trees

1. Scion selection: 1-2-year-old branches with good varieties and strong growth are selected as scions, and the scions collected before the year are stored in wet sand for every 30 pieces after trimming. The scions collected in spring can be picked along with the grafting. If the scion is placed for too long, the scion dries and loses water, the xylem appears black spots, and the survival rate is low or cannot survive after grafting.

2. Scion treatment: the stored scion was soaked in clear water for about 12 hours before grafting, which can not only replenish the water content of the scion and increase the water content, but also effectively reduce the tannin content in the scion and improve the survival rate of grafting.

Third, grafting time: generally, there is no sunny day of late spring cold in the first and middle of March, early or too late grafting is very disadvantageous to the survival rate.

4. The method of branch grafting: in the period from March to April in early spring, the buds are not sprouting, and the commonly used methods are split grafting and ventral grafting, both of which can be used for high grafting of big trees.

1. Splicing: cut the rootstock, cut it down vertically from the center of the cut, cut the scion into a wedge, insert it into a notch, align the two sides of the forming layer, that is, skin to skin, wood to wood, at least one side is aligned, the rootstock can insert 2-4 scions when rough, and wrap it tightly with plastic strips.

2. Ventral connection: abdominal connection is also called waist-li, cutting down at an oblique angle of 30 degrees from the abdomen of the rootstock, reaching 1/3 to 1/2 of the rootstock, the scion is cut into a wedge, one side is as long as the incision of the rootstock, and the other is slightly shorter, and the long side is inserted into the incision of the rootstock. Wrap it tightly with plastic strips.

Fifth, bud grafting methods: there are mainly single bud ventral grafting, T-shaped bud grafting and so on.

1, single bud ventral connection: both in spring and summer, choose a cross-cut at the smooth part of the rootstock, deep into the xylem, and then cut down from 2-3 cm above the cut, slightly with wood silk, to the transverse incision, take out the wood chip. By cutting the rootstock, cut a bud of the same size or slightly smaller and stick it on the rootstock and fasten it with a plastic strip.

2. T-shaped bud grafting: when the tree is peeling from June to July, select a smooth surface on the rootstock and first cut an incision 0.6-0.8 cm long, then cut a 1.5-2 cm knife edge downward from the center of the incision, showing a "T" shape. Cut a knife 1 cm above the selected strong bud, reaching to the xylem, cutting upward from 1-1.5 cm below the bud, with slightly wood silk, and take out the bud piece. Pry open the T-shaped incision of the rootstock left and right, then insert the bud and tie it with plastic strips from bottom to top to expose the bud.

After reading the above introduction, I believe you have a clear understanding of some planting methods of persimmon trees. In fact, the nutritional value of persimmon is very rich, not only contains pectin, but also very rich in vitamin c and carotene. So in daily life, people can often eat some persimmons.