Where is the apple tree suitable for growing? How to apply calcium fertilizer skillfully?

The apples produced by apple trees are sour and sweet, rich in vitamins and minerals, and are one of the fruits that we often eat in our lives. It usually takes two or three years for apple trees to bear fruit after planting, and there are some differences among different varieties. Where is the apple tree suitable for growing? How to apply calcium fertilizer skillfully?

Where is the suitable place for apple trees to grow?

China's apple production and consumption are in the forefront of the world, accounting for 40% of the world's total acreage. Shandong Province is one of the four major apple producing areas in China, and its climatic conditions and ecological environment are extremely suitable for the growth of apple trees. The growth ability of apple trees is relatively strong, regardless of whether the soil is fertile or barren, it can maintain a good growth trend. Shandong Province belongs to the temperate monsoon climate, which is rich in precipitation, sufficient soil water and rich in organic matter, which adds conditions for the growth of apple trees. At the same time, apple trees in good light conditions, dry and cool climate will grow faster than the normal environment, and the longer the light time, the sweeter the apple.

Second, how to skillfully apply calcium fertilizer to apple trees?

1. Seize the peak period

Apple trees have the peak period of absorbing calcium twice a year: the first peak is 3 weeks and 5 weeks after flowering, that is, the young fruit stage, which can be sprayed on the leaves and fruits for 2 times and 3 times. Combined with topdressing high water-soluble calcium when watering for the first time in spring. The second peak period of calcium absorption was 10 weeks and 8 weeks before fruit harvesting. 2-3 days after bagging, Ham Hongyun high calcium solution should also be sprayed for 1 or 2 times. In addition, the calcium supplement before harvest is mainly due to the continuous expansion of the fruit body and the corresponding decrease of calcium concentration in the fruit. At this time, calcium supplement can not only significantly improve the firmness of the fruit, but also increase the accumulation of calcium in the tree.

2. Prevention of physiological diseases

The key measures of applying calcium fertilizer in autumn to solve a variety of physiological diseases caused by calcium deficiency in apple. When base fertilizer was applied in autumn after fruit drop and before leaf fall, formula fertilization was selected. Increase the application of all kinds of mature organic fertilizer as far as possible, because organic fertilizer can improve soil, improve soil fertility, increase the content of soil organic matter, and supply various nutrient elements, especially trace elements, to fruit trees in a balanced and long-term way. it plays an important role in root growth, fruit coloring and improving stress resistance of apple trees. It plays a very important role in the growth of fruit trees and the color of fruit.

Matters needing attention in fertilizing apple trees

Seize the opportunity to apply fertilizer. In autumn, basal fertilizer is applied when the root growth peak comes after the fruit is harvested, and it is best after the autumn shoot stops growing. This can not only ensure that fruit trees absorb fertility, but also prevent excessive growth of autumn shoots.

Combined application of organic fertilizer, chemical fertilizer and extra-root fertilization. Organic fertilizer is generally used as base fertilizer, including cow and sheep manure and chicken manure. In terms of the total amount of fertilization, the amount of cow and sheep manure should be "jin fruit jin fertilizer", and chicken manure can be reduced by half. according to this total amount of fertilization in autumn, according to the deficiency of fertilization in spring, the amount of fertilizer and the type of fertilizer should be supplemented. According to the tree potential and the yield load of the same year, we should pay attention to supplement some extra-root fertilizer such as nitrogen fertilizer, potassium dihydrogen phosphate and so on.

Pay attention to the location and depth of fertilization. In general, annular and semi-annular ditches are suitable for young trees. Strip ditch, hole application, radiation ditch fertilization and whole garden sprinkling method are mostly used for adult trees. The depth of fertilization is generally about 40 cm. With the expansion of the crown, the range and depth of fertilization should be increased accordingly, which should be applied in the main distribution layer of the root system.

Usually, fertilization can be combined with deep ploughing and soil improvement in the orchard. Apple trees are different from field crops. Because of the annual absorption of soil nutrients by the roots, the nutrients of the roots are not comprehensive, and the soil is seriously consolidated. The growth environment of the roots can be improved by deep ploughing and fertilization.