Yuntan Township, Yunhe County, Zhejiang Province, has 120.6 hectares of bayberry, Dongkui Yangmei only accounts for about 30%, and water plum and charcoal plum account for 20% and 50% respectively. The water plum and charcoal are small in fruit, low in yield and low in quality. Good, lack of market competitiveness. To this end, we began to test the high-grade exchange of Dongkui Yangmei in the first 10 to 15 years of the production of charcoal and plum. According to the test results of Maqagang Village in Yuntan Township, the results starting in the second year after the high connection are 200kg per 667 square meters, the output in the third, fourth and fifth years is 410, 850 and 1550kg respectively, and the fifth year after the high connection. 20% increase before the high connection, single fruit weight 25 ~ 30g, the price is 5 to 10 times higher than the water plum, 3 to 5 times higher than the carbon plum, the output value per 667 square meters is 8600 yuan, higher than the high variety Increase by 3 times before. The high-replacement technology is now described as follows.

1 Scion collection and storage scion should be selected from 7 to 15 years old and robust seedling mother tree, grafting is easy to survive, and then sprouts quickly and grows rapidly. The scion should be cut off immediately, and placed for 1 to 2 days to evaporate a part of the water. After the scion is slightly dried, the high connection can increase the survival rate. According to the results of our many years of experimentation, the success rate of scion with mining is high.

2 high-replacement method high-connecting time in the spring of March to the beginning of April, using cutting and abdomen two methods, each anvil tree is generally on 3 to 4 backbone branches, each grafting 1 ~ 2 The scion is connected to the bud, and the grafting site is 20 to 30 cm from the trunk of the main branch of the bayberry tree.

3 After the management of the spring grafting, the rootstock germination should be wiped out in time, and the buds sprouted on the branches without the survival of the stalks, leaving 1 or 2 thick branches, and then replenishing the next year. When the new tip of the scion is 20 to 30 cm long, the wrapping film is released. The pillars are tied below the grafting site, and the new tips of the scion are fixed on the pillars to prevent wind folding. The new shoots of the scion often grow upright, and should be topped several times to promote branching, so that the tall tree can form a canopy as early as possible. After high connection, the wound or slash wound should be coated with 1% copper sulfate or 50% carbendazim WP 600 times. After the liquid is dried, apply protective agent to avoid rot. After the high connection, the new shoots of the red plum tree have many sprouts, and the pests and diseases are serious. Special attention must be paid to the prevention and control of pests such as pine caterpillars, moths, leaf curlers, aphids and cancers.

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