Introduction to the key points of field management of navel orange

Navel oranges are planted in many places in China, because of their good taste and nutrition, consumers are more willing to buy them. The vitamin content in navel orange is very high, especially it has a certain preventive effect on scurvy. The value of navel orange is not only reflected in food, but also can be placed in the home as a bonsai to embellish the environment. If you plant navel oranges, you must master the key points of field management techniques, so as to improve the yield and quality of navel oranges. Let's take a look at it together.

I. soil management

It is already summer, with high temperature and heavy precipitation, navel oranges are prone to fruit cracking, so soil management is very important. Usually, it is necessary to do a good job of drought irrigation and waterlogging drainage, which is conducive to the growth of navel orange fruit and reduce the occurrence of fruit cracking.

2. Pruning work

1. Cut off the weak branch group in the periphery of the crown and retain the strong or mediocre branch group. At the same time, try to retain the leaves and branches, so that the tree potential can be restored as soon as possible.

2. If the tree is weak and most of its leaves fall off, the main branches and secondary main branches that do not meet the shaping requirements should be sawed off, and the branches of the reserved lateral branches should also be cut short. Pick the heart of the new shoot in time, promote the branch, make it quickly form a new crown.

3. The old tree was renewed and pruned in early spring, and the cut was sealed with wax after pruning, and the trunk was painted white. After sprouting in spring, the new shoots were protected and reshaped.

III. Weeding methods

20% can be used to make it emulsified 20ml and a sprayer water spray to remove malignant weeds in the orchard, such as bamboo grass, water peanuts, Artemisia annua and so on. However, herbicides make it a selective stem and leaf herbicide, which is only effective against broad-leaved weeds. The use of taron can not only effectively kill malignant weeds such as water peanuts, but also meet the cultivation of grass in orchards.

IV. Pest control

The common diseases and insect pests of navel oranges are black whitefly, leaf curl, shell worm, red, yellow spider, anthrax, soot, etc., different diseases or pests are used. For example, if navel oranges suffer from black whitefly, leaf rollers, shell insects and other pests, they are generally diluted with Lesbon EC and can be sprayed repeatedly every day in three weeks. If it is suffering from anthrax, soot disease, you can use wettable powder dilution for prevention and treatment, generally half a month can be repeated once a day.

5. Fertilization methods

1. Boron fertilizer should be applied before sprouting in spring. Adult navel orange trees generally use 10g / tree / year, and young trees under three years old usually use 5g / tree / year. The content of pure boron in boron fertilizer is required to be more than 11%. Mix with the right amount of sand and sprinkle symmetrically on the tree plate. And it is not suitable to mix organic fertilizer with boron fertilizer.

2. Boron fertilizer was sprayed on the leaves in the growing season. Boron fertilizer is sprayed two or three times (0.1-0.2%). The first time is in April and May, and the second and third times are from June to August. The boron content is not less than 13%.

3. Correctly identify boron fertilizer. The serious deficiency of boron content in fake boron fertilizer is the main reason for the serious boron deficiency of navel orange trees in some areas.