Key techniques for improving the quality and yield of Dongkui Waxberry (part two)

2. Keep the tree in the middle

(1) Tree potential: not strong, not weak. Maintain the middle tree potential between strong and weak.

(2) branches and leaves: not dense, not sparse. Keep the crown open and transparent.

(3) Leaf color: not dark green, not yellow-green. Showing green leaves.

3. It depends on tree management.

To look at tree management is to treat different tree potential between trees in the same garden and have different management requirements.

4. The crown opens.

Dongkui bayberry has a round crown and exuberant branches, so it is easy to form a closed crown. The closure of the canopy will cause many adverse consequences to blossom and fruiting. The canopy is closed, the light transmittance is poor, the tip of the inner branch is easy to weaken or wither, the inner chamber is empty, and the resulting volume is reduced. Therefore, through pruning, the crown of Dongkui bayberry should be changed from closed state to open state.

5. Keep oblique shoots

Dongkui red bayberry has a strong apical advantage because of its strong shoot growth. Due to the influence of apical dominance of Dongkui red bayberry, the nutrition (including endogenous hormones) of various parts of the crown is easy to be maladjusted. Therefore, in order to change the effectiveness of Dongkui bayberry top advantage, it is necessary to use manual control to control its top advantage. The most effective way to change the apical dominance of Dongkui bayberry is to remove erect branches and select oblique branches.

6. Tip pressing

The so-called tip pressing is to control the branch tip, that is, to press the branch tip to prevent it from elongating. Dongkui bayberry fruit branch, less than 15 cm is better, about 10 cm is the best, even a short fruit branch of about 5 cm is OK. On the other hand, the long fruit branches or overgrown fruit branches of more than 15 cm have poor performance and high incidence of deformed fruit.

7. Thinning flowers and protecting fruits

The adult fruiting tree of Dongkui bayberry has a lot of flowers. If it blossoms too much, it will consume a lot of nutrients, and it will also cause a lot of falling flowers and fruits, which will affect the yield. If there are too many young fruits, there will be more deformed fruits. Therefore, in order to Dongkui bayberry high quality and high yield, thinning flowers and protecting fruit is very necessary.

8. Careful application of nutrient solution

There are many nutrient solutions on the market, but you have to choose to use them. After being used by many fruit growers, it has different effects.

Pay attention to potash fertilizer

Potash fertilizer has many effects on Dongkui bayberry, and Dongkui bayberry also needs potassium very much, so we should pay attention to the application of potash fertilizer. Because of mycorrhizal symbiosis, Dongkui red bayberry can fix nitrogen and provide nitrogen for the tree. Under normal circumstances, it can not apply nitrogen fertilizer. Phosphorus is only needed when young trees promote growth, while adult trees need little phosphorus, while more phosphorus affects the growth and fruiting of adult Dongkui bayberry trees. Therefore, it is possible not to apply phosphate fertilizer.

10. prevention and control of diseases and insect pests

The main diseases and insect pests of Dongkui bayberry are brown spot, cancer, dry blight, root rot, white rot, boron deficiency, termites, fruit flies, aphids, scale, leaf roll moth and so on. Timely detection and early treatment should be made, and prevention should be more important than treatment.