The Latest Navel Orange Fertilization Techniques and Methods Tutorial

Navel orange is what we call sweet orange; it is a type of orange, and its cultivation history in our country is not very long compared with that of many other common fruits. The most famous navel orange in our country is the Gannan navel orange, mainly because Gannan is suitable for growing navel oranges, and the Gannan navel orange has the characteristics of large fruit, sweetness, good looks, and juicy, high quality. So today what we are going to learn about is a very important point in the navel orange cultivation process. Let's take a look at its fertilization techniques below.

I. Fertilization of young trees

Navel oranges generally bear fruit in five years, so we usually call navel orange trees in the first four years young trees. These four years are the period of growth and development for the navel orange tree, and what we need to do is promote the growth of the young trees. For one-year-old navel orange trees, we apply additional fertilizer about one month after planting, and fertilizer needs to be applied once every month, mainly urea. After the treetops sprout and mature, we then need to use it together with compound fertilizer, with the amount controlled at about 50 grams, applied in furrows outside the roots. There is one more point to note: for young trees in the growing period, the number of additional fertilizer applications each year is about 8 to 9 times, which means that generally by early October, additional fertilization can be stopped. For two-year-old to four-year-old navel orange trees, the fertilization method is basically the same as for one-year-old trees, but the amount of fertilizer can be appropriately increased, though not exceeding 200 grams at most.

II. Fertilization of fruiting trees

1. Spring fertilizer

Spring fertilizer for navel oranges should be applied as early as possible, generally between February and March each year. When fertilizing, we mainly use the method of furrow application outside the roots, which can prevent nutrients from damaging the navel orange root system. Spring fertilizer is mainly to promote the growth of spring buds, which is greatly related to the fruiting branches, and also has a relatively large impact on the amount of fruit set afterward. We mainly use ternary compound fertilizer for fertilization, in which the nitrogen content is relatively high, and the amount per tree is about 1 jin to 2 jin.

2. Flower and fruit fertilizer

The flower and fruit fertilizer for navel oranges is divided into pre-flowering fertilizer, fruit-preserving fertilizer, and fruit-strengthening fertilizer. Pre-flowering fertilizer is generally applied in early April, in order to supplement the tree's nutrition and ensure the quality of flowering, mainly with quick-acting fertilizers. For navel oranges, this is the fruit-stabilizing fertilizer, generally applied at the end of April, still using compound fertilizer, with the amount per tree controlled at about half a jin, and when applying additional fertilizer it can be combined with a fruit-preserving agent, which can increase the fruit-setting rate of navel oranges and reduce fruit drop. The last is the fruit-strengthening fertilizer, generally applied during the period from the end of June to early July, with the fertilization amount controlled at about 2 jin, mainly potassium fertilizer, and it should be used together with boron fertilizer and zinc fertilizer.

3. Fertilizer after fruit harvest

After the navel oranges are harvested, in order to restore tree vigor and ensure next year's production, we need to scientifically apply additional fertilizer after fruiting. When conditions permit, it is best to use a combination of organic fertilizer and inorganic fertilizer, which can not only supplement the tree's nutrition but also improve flower bud differentiation, enable the navel orange tree to overwinter safely, and ensure next year's yield.

The general fertilization situation for navel orange cultivation is roughly like this. If everyone wants to know more detailed fertilization amounts or details of fertilization and other issues, then leave a message to the editor for consultation, because the editor's experience is limited and will not explain it in detail here.