Methods of protecting Flower and Fruit of navel Orange

Navel orange is a seedless variety, it blossoms a lot, but there are also many fallen flowers and fruits, so it is necessary to take measures to protect flowers and fruits when planting navel oranges. If the flower and fruit protection of navel orange is the key to achieve high yield in navel orange production, let's take a look at the flower and fruit protection measures of navel orange together with the editor.

1. Timely pruning and sprouting

After budding in spring, the plant should be cut off in time, and the top winter branches, only growing branches, disease and insect branches, and old branches should also be trimmed off the deformed flowers and leafless globular flowers. If the autumn shoot grows too long, control its length, leave only 3-6 flowers and get rid of the rest. Remove all the overdense spring shoots or short and weak spring shoots at the top and periphery of the crown, truncate or prune the overlong spring shoots, and trim the late spring shoots, summer shoots and early autumn shoots.

2. Rational fertilization

Spring is the flowering and use of navel orange, or the growth period of spring shoots, when the nutrient consumption is too large. In order to avoid poor growth due to lack of nutrients, it is necessary to fertilize and replenish nutrients in time. Topdressing should be determined according to tree age, tree potential, soil and the amount of flowers and fruits, so that it can not only effectively protect flowers and fruits, but also promote fruit expansion and increase yield. Generally need to apply fertilizer twice, once in February, apply Zhuanghua fertilizer, urea 400-500g per plant, compound fertilizer 300-400g and thin manure 50-100kg; the second time in March, apply stable fruit fertilizer, 400-500g per plant compound fertilizer, weak tree potential, large flowers can apply some urea.

3. Spraying hormone

In planting and production, many fruit farmers will prevent and control the phenomenon of falling flowers and fruits by spraying chemicals and hormones, and the effect is better. The mixed solution of borax, urea and potassium dihydrogen phosphate can be sprayed at flowering stage, and Fangluisu plus urea and potassium dihydrogen phosphate solution can be sprayed from flowering to young fruit stage, twice in a row, every 10-12 days. After the spring shoot turns green, urea and compound fertilizer solution can be sprayed for many times in combination with pest control, which can quickly supplement nutrients and improve fruit setting rate.

4. Ring cutting

If none of the above methods can inhibit the overgrowth of vegetative growth, ring cutting can be used to prevent the downward transport of nutrients and retain nutrients to improve the fruit setting rate. The object of ring cutting is mainly in the orchard with strong tree strength, less flowers and less light, using a knife to cut the smooth ring of the trunk in full bloom to cut the phloem of the plant, but not to damage the xylem. It is necessary to do a good job in wound maintenance after ring cutting to avoid the invasion of germs and lead to plant disease.

The above is the navel orange flower and fruit protection method introduction, hope to help you, want to know more related knowledge, please pay attention to us.