Technology of height grafting and replacement of Golden Pear
Most varieties of white pear and sand pear system can be changed to golden pear. To change the connection of a big tree, we should first determine what kind of tree shape to change, and then according to the requirements of the tree shape, select the backbone branch and the first branch. The original head of the new branch was sawed off, and the scion with suitable thickness was selected for grafting. The scion uses annual branches. Cut the full shoots in winter or spring and store them in the cold storage or dig trenches to cultivate sand in the shade. Multi-head grafting was carried out in late March. Generally, trees less than 5 years old have 10 buds per tree; 5-10-year-old trees with 20 buds per tree; 10-20-year-old trees with 40 buds per tree with 30-year-old buds; trees of more than 30 years old with 40-60 buds per tree. At the saw mouth, the subcutaneous joint is used, the bald part is connected with the subcutaneous abdomen, and the fine rootstock is cut into the abdomen. The number of joint buds depends on the site of the graft and the thickness of the rootstock. Subcutaneous grafting and ventral grafting should be carried out when the cambium is active (leaving the bone), and the saw can be subcutaneously grafted with 2 Mel and 3 buds. After being connected, wrap all the buds tightly with a plastic film with a width of 20 centimeters. Pay attention to bandaging the bud site must be covered with monolayer plastic film, otherwise the bud can not break the film to sprout. Individual buds can not be ejected by breaking the membrane, and a pin can be used to pick them out in the later stage. After grafting, the sprouting of the rootstock should be wiped off in time. When the new shoot grows to about 30 cm, bind the windproof rod; in the middle of June, release the binding film when the new shoot grows to about 80 cm; in July, when the new shoot grows to about 80 cm, the binding angle is 45 ~ 60 degrees, which can form axillary flower buds in that year and bear fruit the following year.
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Abe white peach
White peach Abe was selected in Hiroshima Prefecture, Japan. Hunan area matured in the first and middle of July, and matured in the middle and late maturity. The cooling capacity is low and there is no sprout phenomenon. The tree is strong, the tree posture is slightly opened, and the yield is especially good, with a yield of 14 kg in the third year. The fruit is short oval and large in shape. after fruit thinning, the average single fruit weight is 400g, and the maximum fruit weight is 1250 g. Fruit all red, hard meat, insolute, semi-detached, high quality, soluble solids content 14% Murray 16% extremely resistant to storage and transportation. This variety is the best coloring variety among the middle and late ripening hard flesh peach varieties at present.
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Don't relax after apricot harvest management
There is still a long period from harvest to defoliation of apricot. Strengthening management during this period plays an important role in reducing the occurrence of diseases and insect pests, restoring tree vigor and improving the quantity and quality of flower buds. Appropriate pruning for mature fruit trees is mainly to adjust the density of branches, cut off diseased branches, cross branches, overlapping branches, thin branches and excessive branches in the crown, so as to reduce tree consumption, increase the accumulation of photosynthetic products and promote the formation of flower buds. Fertilization and water management Apricot harvest should be timely fertilization, especially for the weaker trees and
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