In the cold-proof area where vines are buried, the main vines must be cultivated close to the ground and have enough inclination. The main vines of the whole row of trees should be tilted to one side when they are put on the shelves, so that the main vines are tilted forward and sideways. This is not only convenient for the upper and lower frames to bury the soil for cold protection, but also can alleviate the growth of new buds at the roots of the frames.

Trunk pruning process

The amount of dried longan must be appropriate. If it is too little, after accidental injury and aging, it can't make up for each other and update in turn. If there are too many, the growth potential between them is not easy to maintain balance, so the formation is slow, the fruit is late, and the roots are easy to freeze. Therefore, in order to overcome these shortcomings in production, it is best to raise Ssangyong in every factory.

Short-arm dragon trunk in hedge frame, single-arm horizontal trunk and inclined trunk can be used in buried cold-proof area, and vertical trunk and double-arm horizontal trunk can be used in non-cold-proof area. When the new shoots are tied vertically upwards, the long stems should be tied on the first iron wire about 0.5 meters above the water surface, and the new shoots should be tied on the second to third iron wires above. For example, let the new shoots droop naturally without binding, and you can use a single fence frame with iron wire, and the horizontal trunk is about 1 ~ 1.2 meters from the ground. The density of the upper branches of the main vine can be appropriately increased when the wide-topped single hedge frame is adopted.

Short branch pruning, middle branch pruning and long branch pruning are three different ways of branch culture, and their specific application depends on the specific situation. Short branch pruning means keeping 1 ~ 4 buds short, middle branch pruning means keeping 5 ~ 7 buds short, and long branch pruning means keeping more than 8 buds short. When the plant spacing is large and the number of main vines on the frame surface is small, the method of combining medium and long branches pruning with short branches pruning can be adopted. When the plant spacing is small and the number of main vines on the frame surface is large, the method of combining short branch pruning with medium and long branch pruning should be adopted. Because short branch pruning has the advantages of easily controlling the number of branches and buds and the outward movement of the bearing parts, it also has the disadvantages that branches and vines are easily blown off by the wind and cannot be compensated after being left vacant. Therefore, the three different pruning methods of long, medium and short tips should be combined with each other and flexibly focused. Practice has proved that the effect of pruning branches by any single method is not very good. Only by mixing various pruning methods can we learn from each other and achieve the ideal effect.