What fertilizer should be applied to apples after bagging? How to manage to make apples have good colors?

After the apple blossoms, it is bagged again after the second decision. The apple package time is generally about 45 days after flowering, and the time is generally until mid-June. The benefits of apple bags are obvious to all, and the apples with high quality and good price have been greatly improved. After bagging, it is very important to scientifically fertilize apples in order to achieve high quality and high yield.

Under normal circumstances, the temperature is high after June, and all localities have entered the flood season. The utilization rate of fertilizer in severely arid soil is low. As we all know, chemical fertilizers can only exert the greatest impact, and most of them suffered from dry weather before the flood season. At this time, fruit trees, fruit trees and other nutrients, as well as a large number of nutrients, will affect the normal growth of apples if they are not replenished in time. Therefore, after apple trees are bagged, there is a favorable water inflow time in many areas at this time of the year. Before the rain came, the fertilization ditch was put in place. Generally, the depth of the ditch is about 10 cm, so don't entertain.

The fertilizer used after bagging apples is generally 45% NPK controlled release fertilizer+bio-organic fertilizer +8? 10 cm, each tree needs to dig 6 fertilizer ditches. Do not apply a large amount of fertilizer, concentrate, prevent fertilizer, concentrate, and prevent fertilizer from volatilization, loss, root burning and apple sleeve burning, followed by fertilizer. Don't delay fertilization because of soil. If fertilizing, it is best to fertilize according to the weather forecast. We should make water to promote fertilizer these days.

Because apples are in full bloom, according to the morning and evening of apples, there are about 2? Three months, a long time, a long time, requires continuous fertilizer supply, and fertilizer selection should be the stage of quick-acting slow-release fertilizer. Combine trace elements and use fertilizer scientifically. Passing through a relatively low-lying place is the arrival of the flood season. If it rains heavily, the apple tree will be in the low-lying apple tree. If a large amount of nitrogen is used as the topology, it will be damaged by heavy rain immediately after application, and then the water-soluble fertilizer will be easily lost.

Excessive fertilizer has many disadvantages. Some of our friends choose to rain before it rains. In fact, this method is very simple and time-saving. Fertilizer is not only a part of the loss, but also a long-term occurrence. It will cause the roots of apple trees to grow up and form floating poison. In the upper soil, the ability of apple trees to die, resist corrosion and resist corrosion is easily misunderstood without the deep-rooted ability of apple trees and fruit trees, and the surface phenomenon is vigorous growth. In fact, this kind of apple tree is the most prone to premature aging, not conducive to flower bud differentiation in the following year, but more conducive to the continuous quality of apple trees.

After autumn, the weather gradually turned cold, and the apple tree entered a stable growth period. In the second year, bud differentiation was basically completed. At this time, it is best to carry out the special fertilizer for Shishi fruit trees 1. Double, can promote apple fruit expansion, improve the proportion of high-quality fruit. Apple trees of different ages need slightly different fertilizers. For the newly-built automobile park within three years, the early growth of fruit trees, the growth of apple branches and the continuous underground growth all need nitrogen and phosphorus fertilizers. Therefore, it is easy to pay attention to nitrogen fertilizer and phosphorus fertilizer, and the number of fertilizers cannot be less. At the same time, watering is more conducive to the formation of strong buds, better tree potential and stronger roots.