Lemons are open all year round and have a strong aroma. So many of my friends like to plant potted lemons. Today, I will share with you how to plant potted lemons. If you grow them, you don't have to buy lemons!
The lemon pot technique mainly has the following points:
1. Seedlings and upper pots: The cultivation in the south is large, and it is suitable to use grafting; the cultivation in the north is small, mainly using cutting methods, and grafting seedlings can also be purchased. The root system of lemon has higher requirements on water, nutrients and soil. The potting soil should be made into water-permeable, breathable, water-preserving and fertilizer-reducing, slightly acidic culture soil. The basin and basin change time, after the fall, early spring, can be flexibly controlled according to the local climate.
2, light and temperature: lemon is a hi-light plant, but the sun is too strong, then growth and development. Generally, the annual average temperature for plant growth for proper growth at noon is above 15 °C, the optimal growth temperature is 23 °C to 29 °C, growth is stopped above 35 °C, and freezing is caused at -2 °C. Lemons generally do not need to cool down in summer, enter the room before the frost, and leave the room after clearing, which can safely overwinter.
3, watering and fertilization: lemons need more water in the growth and development, but too much water is not easy to rotten roots. In general, spring is the period when the leaves are spread and the buds are flowering. In summer, the light is strong, the temperature is high, and more water is needed. But it should be timely and appropriate, otherwise it will cause fruit drop. Autumn is the growth of autumn shoots and the rapid expansion of the fruit. It must have sufficient water. Late autumn and winter are the stages of flower bud differentiation, and the potting soil is dry. Lemon is more like fertilization. In addition to the upper pots and basins to apply the base fertilizer, the principle of thin fertilizer should be adhered to during the growing season. The number of fertilization times and the amount of fertilization must be determined according to the growth and phenological period. For example, it is better to apply the liquid fertilizer to the fully fermented cake fertilizer water, and the ratio of cake to water is 1:200. The soil in the north is hemiplegic, and ferrous sulfate can be added to the fertilizer solution to form a slightly acidic nutrient solution.
4, pruning: pruning is generally divided into winter shears and summer shears. Winter shears should be based on the principle of “clearing the secrets, leaving the weak and staying strongâ€, cutting off the dead branches, short-cut weak branches and long branches without the role of primary space. The summer shears are mainly short and long branches on the fruitless tree, and the summer shoots are wiped off on the result tree, and the decaying branches in the upper middle part of the short canopy are short. The flower-promoting and fruit-protecting lemons are the species of the four seasons of flowering, while the northern potted plants are mostly the result of spring flowering. Therefore, after the autumn shoots stop growing, water must be controlled. After the two sides of the blade begin to roll inward, water is moderately applied to promote flower bud differentiation. Pay attention to fertilization in the pot, foliar spray, and cultivate a strong result of the mother branch.
5, the main measures of fruit preservation: First, strengthen the supply of fertilizer water, accumulate nutrients; second, carry out artificial pollination; third, thinning flowers and fruit. The lemon fruit is large and requires more nutrients. The normal leaf to fruit ratio is 30 to 40:1. In accordance with the principle of weakening and staying strong and evenly distributed, firstly, the excessively dense flower buds are removed; then, when the young fruit is 1 cm in size, some fruits are removed; finally, after the physiological fruit drop, the fruit is compared according to the leaf-fruit ratio. It is also possible to leave weak branches, and only one fruit is left in strong branches.
Let the potted lemons have a good fruit and make the potted lemons more fruitful. Pay attention to the seven links:
First, change the basin to change the soil: potted lemon in the spring from March to April must turn over the soil. If the flower pot is too small, it can be replaced with a suitable flower pot. If the flower pot is suitable, the original pot can be replaced with new soil, and the base fertilizer should be applied when changing the pot.
Second, spring pruning: in the spring combined with changing pots for spring shears, cut off the inner litchi, dead branches and leaves, pests and roots, long branches, in order to facilitate plant fruit.
Third, reasonable fertilization: lemon plants before flowering and after hanging fruit, it is necessary to apply fertilizer several times, apply multiple elements of flower fertilizer once a month, spray flower nutrient solution once every half month, to ensure that the fruit is not easy to fall off, a large color bright.
Fourth, to prevent defoliation: leaves affect the lemon results, in order to avoid falling leaves, in the daily management work, avoid watering too much.
5. Noon shading: Before the flowering of the lemon plant until the fruit is hung, when the temperature exceeds 30 °C at noon, it should be shaded for about 3 hours, otherwise it will affect the normal flower shape and hinder the plant fruit.
Sixth, artificial pollination: artificial pollination is an important measure for hanging fruit. Pollination is best carried out in time after the petals are opened, and the work is carried out at about 9 o'clock every morning. The effect is better.
7. Prevention of pests and diseases: Summer and autumn are the seasons of pests and diseases, and should be controlled. To prevent pests and diseases, we must prevent the weight from being treated. The spraying time is once every half month. The spraying time is about 9 am, and around 4 pm, it is not suitable for spraying in the hot sun at noon to prevent phytotoxicity.
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