Naphthylacetic acid and sodium naphthylacetate can promote plant cell division and expansion, induce the formation of adventitious roots, increase fruit setting, prevent fruit falling, and change the ratio of female and male flowers, which are widely used in fruit trees.

Anyang Quanfeng Biotechnology Co., Ltd. is a manufacturer of naphthylacetic acid. The technicians of Quanfeng Biotechnology introduced the application of naphthylacetic acid in fruit trees in detail.

1. For fruit thinning of Golden Crown, Marshal Apple and Yali, spray 20 mg/L NAA after two weeks of blooming, and spray 20 mg/L NAA+300 mg/L ethephon after 10 days of blooming of Guoguang Apple, which can achieve significant fruit thinning effect.

2. Prevent pre-harvest fruit fall of Jinqing, Marshal and its short-branch varieties, and Hongyu and other apples. The pre-harvest fruit fall is relatively serious. Spray 30~40 mg/L of naphthoic acid 5~10 days before the fruit fall period, and spray it again every 10~12 days, which can prevent pre-harvest fruit fall and promote fruit coloring.

3. Promote cutting rooting. Dip grape cuttings with 500~1000 mg/L NAA solution (quick dip), which can improve the survival rate of cutting and increase the rooting amount. 1000 grams of talcum powder plus 0.5~2.0 grams of naphthylacetic acid powder, fully mix, soak the base of cuttings with water, and then dip appropriate amount of powder into the seedling bed. This method is used for cuttings of hard-rooted seedlings such as pomegranate.

4. How to prevent the sprouting of many varieties of Marshal and Fuji apple at the cutting and sawing mouth? How to fertilize the watermelon to produce high yield? It is easy to sprout at the large cutting and sawing mouth, which not only consumes a lot of nutrients, but also seriously affects the ventilation and light transmission of the inner chamber. If 1% or 1.5% naphthalene acetic acid solution is applied to the cutting and sawing mouth during winter shearing, the sprouting can be prevented.

5. Promote the rooting and survival of the planted seedlings. When the young trees are planted, immerse the roots in 50-100 mg/L of naphthoic acid solution for 20 minutes or spray them on the roots, which can improve the survival rate of the planting. A good effect can also be obtained by soaking roots with low concentration of NAA for a long time before planting.

6. Prevent the grape from falling. Soaking the ear with 300 mg/L naphthoic acid when the size of the fruit pea can prevent the grape from falling.

7. Promote seed germination. The hawthorn seed shell is thick and hard, and it is difficult to germinate. It takes 2 winters to germinate with the general layering method. Soaking seeds with 50-100 mg/l of NAA solution can promote hawthorn seed germination.

8. To promote parthenocarpy. At the flowering stage of strawberry, 0.25 mg/L lanolin naphthylacetate ointment can induce parthenocarpy of strawberry.

9. To promote the healing of the disease spots, mix 50 mg/L of naphthoic acid in 50 times of 40% Formosas solution, and the transformation technology of strong apple tree can significantly improve the healing speed of the rotten scar, reduce the recurrence rate of the rotten disease, and further improve the control effect.

10. To promote the healing of the graft interface, use 1 gram of naphthoic acid and 100 grams of water to prepare a solution, then cut waste paper into strips and immerse it in the solution, and then take it out and dry it in the shade to form hormone paper. Binding the grafting part of fruit trees with hormone paper is beneficial to callus formation. Compared with the unbound ones, they can survive 3 to 5 days earlier.