How to fertilize apples after withering? Are there any precautions?

During this period, adequate nutrition is the key to ensure fruit development. Fruit size is closely related to nitrogen and potassium, so fruit farmers often use high nitrogen and high expansion. At this time, it is a little late to topdressing after flowering, but for orchards that don't topdressing after flowering, we are bound to be absent. When it comes to apple tree fertilization, it should be one of the most discussed topics, which can be said to be a simple and basic work.

However, it is not an easy task to achieve the ultimate goal. As for fertilization in May and June, how should it be implemented? Let me talk about my own demand for proper nutrition supplement for fruit trees. In June, according to the specific situation of fruit trees, I can also apply fertilizer in moderation. Apply pre-flowering fertilizer or germination fertilizer to the following fruit trees (early April); Fertilize the apple trees after flowering (mid-May); These two fertilization in the early stage can effectively promote the germination and flowering of fruit trees, prevent fertilization in time because flowering consumes a lot of nutrients, improve the fruit setting rate and promote the growth of new branches. Foliage fertilizer plus new high-fat film, combined with spring irrigation topdressing chemical fertilizer, mainly nitrogen and phosphorus fertilizer, with appropriate amount of potassium fertilizer.

In order to promote flowering and fruit setting, trees should be topdressing nitrogen fertilizer from early March to early April, or spraying foliar fertilizer and new high-fat film. Before flowering, young fruit period and fruit expansion, it is mid-May, which is the season of apple tree thinning. It rained just a few days ago, and the orchard is not too dry. We usually water the fruit once before bagging and apply water-soluble fertilizer once. Let me share my recent experience. Good fruit quality requires that nitrogen should not be too much, and trace elements such as calcium, magnesium, zinc and boron should be in moderation, which is in line with the practices of fruit farmers here. Let's talk about our own views. In May, fruit farmers here generally combine tree growth with pest control and will supplement calcium on leaves. In June, they will mainly apply phosphorus and potassium fertilizer to the soil and cooperate with foliar spraying to supplement nutrients for apple trees.