How to fertilize the fruiting lemon tree

Lemons must be very familiar to everyone, especially for some female friends. Drinking with lemon and honey in summer can have the effect of beauty and beauty, so summer lemonade is a necessary drink for lady Amy.

How to fertilize the fruiting lemon tree

Results the fertilization principle of lemon tree is to apply deep autumn fertilizer and fruit picking fertilizer, and to apply pre-flowering fertilizer and ear fruit fertilizer to make it light in the first half of the year and heavy in the second half of the year.

During the spring shoot sprouting from February to March, the first fertilization was carried out, and some available nitrogen fertilizer was applied according to the strength of the tree. Trees with weak wood and more flowers should be applied more, while trees with strong wood and less flowers should be applied less or not. The amount of nitrogen fertilizer accounts for 1015% of the total amount of the whole year, which promotes the healthy growth of spring shoots and spring flowers.

The second fertilization after flowering to before fruit expansion, combined with fruit protection, pest control, spraying 0.3% urea solution many times, timely supplement the loss of tree nutrients after flowering and increase the amount of fruit.

The third fertilization was from July to August, during the period of autumn shoot sprouting and fruit expansion. This time, the amount of fertilizer application is large, accounting for 40% of the annual amount of nitrogen fertilizer, 50% of phosphorus fertilizer and 50% of potassium fertilizer. Two fertilization pits are opened at the dripping line of each plant, with a depth of 30cm to 40cm, to ensure that the mother branches of autumn shoots are robust and spring flowers differentiate well.

The fourth fertilization was applied again and deeply after fruit harvest in November and before the temperature dropped. In the deep digging holes on the other side of the autumn fertilization, the amount of nitrogen fertilizer accounted for 40% of the annual application, and phosphorus and potash fertilizer each accounted for 40%, mainly green manure, slag fertilizer and other organic late-acting fertilizer.

The amount of fertilizer application is determined according to the yield of each tree in the past two years. According to the annual plant yield of 30 kg, the plant should apply 0.3 kg of pure nitrogen, 0.2 kg of pure phosphorus, 0.2 kg of pure potassium, 0.6 kg of urea, 1.0 kg of superphosphate and 0.5 kg of potassium chloride. According to the experiment, milk cow manure was applied to 15-year-old lemon trees 4 times a year, 150 kg per tree, with an average yield of 48 kg, and 500 kg per plant, the yield could reach 73 kg.

In addition, when spring flowers and fruits suffer losses, quick-acting fertilizer should be applied immediately to promote flowering and fruiting in May and June and increase the yield of the same year.

Growth characteristics of lemon shoots

Lemon has a strong growth potential, drawing new shoots 3 or 5 times a year, drawing shoots, blooming and fruiting many times, with long, sturdy shoots and good yield.

Spring shoots from February to April: the germination time of new shoots was consistent, and the number was large, and the shoots were short, fine and neat, and most of them differentiated flower buds and formed fruiting mother branches.

Summer shoots from May to July: the branches grow strongly, absorb more nutrients, the leaves are dark green, and the cross section of the branches is rhombic, which is easy to form long branches.

Autumn shoots from August to October: most of them are female branches of the following year. Under the influence of flowering and fruiting, the number of shoots is small, the branches are slender, and the development is not full.

Winter shoot from November to January of the following year: due to the influence of low temperature and nutrients, the number of hair is small, the nutrition is insufficient, and it is easy to produce yellowing.

Pruning of lemon trees

The main purpose of pruning young and primary fruit trees is to cultivate the crown skeleton in order to expand the crown faster and better. Pruning of young trees is suitable in winter, coring and necessary truncation should be carried out in the growing season, and branches and leaves and auxiliary branches should be retained as much as possible. Pruning points:

1. Pick the heart from the long tip

Young trees should draw long shoots, and after each season shoots are produced, except for keeping 8-10 coring pieces for long shoots, the rest should be tender shoots and coring. It is appropriate to leave a length of 20-25 cm to enrich the robust crown, early branching and multi-branching, so as to expand the crown as soon as possible.

2. Erase the long branches in time

Only growing branches disturb the shape of the tree and waste nutrients, which should be erased in time.

3. Pull branches

For the vigorous growth of upright branches, it is appropriate to use the method of pulling and bracing. The strong branches are pulled down and the solution angle of the larger branches is 40 °~ 50 °. If the young trees are pulled and braced, the young trees can bear fruit 1 ~ 2 years earlier.

4. Wiping buds and putting shoots

Young trees can be sprouted in summer, that is, one autumn shoot, in order to expand the crown as soon as possible.

5. Summer shoot pruning

Young trees with strong growth have more strong shoots. As the strong summer shoots are not easy to produce autumn shoots and are not conducive to flower bud differentiation, bud wiping and thinning are carried out from May to July. Therefore, it was completely cut off in early August, so that more autumn shoots were produced from late August to early September. Most of these autumn shoots blossom and bear fruit the following year.

6. Cultivation of auxiliary branches

Branchlets that usually grow in the crown should be retained as long as they are not overgrown and over-dense. These twigs are often good fruiting mother branches for young trees.

7. Thinning flowers and buds

The buds and fruits of the weak trees before the planned fruit production of young trees should be removed in time in order to promote tree nutrition production and form a fruiting crown and put into production as soon as possible.

How to plant potted lemon trees

1. Soil selection: the choice of soil should be loose and fertile, and the drainage performance is good. Can be suitable for the seed-carrying season is autumn and winter, the best choice is tile basin, can dig out the depth and width of more than 0.8 meters of round holes, digging holes, simultaneously apply soil fertilizer, lime, later epidermis mixed, the top layer can be put into pig and cattle pen fertilizer.

2. Planting: when planting, you can choose when Rain Water is distributed, put it in the courtyard, on the thick balcony, start to plant the lemon seedlings selected by the market in the center of the tile basin, and then fill back the pit. The root soil can be about 20 cm higher than the surface soil.

3. Fertilizer and water management: at the same time, the seeds can be watered at the same time, and then in the first and second year of the young, nitrogen fertilizer can be selected as nutrition, which can be applied in autumn and the dosage can be controlled at 150g. Watering after fertilization can promote germination. The watering of lemon trees needs a small number of times, and lemon trees are not resistant to drought and can be drenched directly. And late autumn makes it, and potted lemon trees, not long-term contact with the hot sun, hot summer, it can be moved to the sun shelter.

4. Middle ploughing and weeding: mid-ploughing means that the soil can be renovated, and a special shovel can be applied to renovate the soil around the lemon tree. the best time is summer, which can make the soil loose and reduce water evaporation, while the number of times of mid-ploughing can be guaranteed for 3 times a year. Root damage should be avoided and weeds under the canopy should also be eradicated in time.

Many people have eaten lemons, but they may not know much about growing lemons. Through the introduction of the above editor, they must have a general understanding. In fact, if any kind of fruit, fruit growers want to get a bumper harvest, you have to make efforts.